# All PDF Reader

状态：active
Platform：android
Package：com.ezt.pdfreader.pdfviewer
Version：3.3.0
Opportunity：2026-06-09-pdf-reader-pdf-viewer

## 摘要

- 包类型：xapk，inner APK 数：3
- 引擎 / 框架：native
- SDK 线索：admob, facebook, firebase
- Endpoint candidates：42
- 结论口径：本报告只基于静态 ZIP / Manifest / 字符串证据；不代表真实运行路径已验证。

## 直接证据

- [high] Manifest package id is com.ezt.pdfreader.pdfviewer（source: `AndroidManifest.xml`，status: `verified`）
- [high] Manifest declares 26 permissions（source: `AndroidManifest.xml`，status: `verified`）
- [high] Engine/framework markers: native（source: `APK file inventory`，status: `verified`）
- [high] Static strings include 42 endpoint candidates（source: `Text/string scan`，status: `verified`）
- [high] Package contains 24 native libraries（source: `APK file inventory`，status: `verified`）

## 推断

- [medium] SDK markers suggest: admob, facebook, firebase（source: `Manifest, filenames, and text strings`，status: `inferred`）

## 权限和组件

### 权限

- `android.permission.ACCESS_ADSERVICES_AD_ID`
- `android.permission.ACCESS_ADSERVICES_ATTRIBUTION`
- `android.permission.ACCESS_ADSERVICES_CUSTOM_AUDIENCE`
- `android.permission.ACCESS_ADSERVICES_TOPICS`
- `android.permission.ACCESS_NETWORK_STATE`
- `android.permission.ACCESS_WIFI_STATE`
- `android.permission.CAMERA`
- `android.permission.FOREGROUND_SERVICE`
- `android.permission.INTERNET`
- `android.permission.MANAGE_EXTERNAL_STORAGE`
- `android.permission.POST_NOTIFICATIONS`
- `android.permission.READ_EXTERNAL_STORAGE`
- `android.permission.READ_MEDIA_IMAGES`
- `android.permission.READ_MEDIA_VIDEO`
- `android.permission.READ_MEDIA_VISUAL_USER_SELECTED`
- `android.permission.RECEIVE_BOOT_COMPLETED`
- `android.permission.SCHEDULE_EXACT_ALARM`
- `android.permission.VIBRATE`
- `android.permission.WAKE_LOCK`
- `android.permission.WRITE_EXTERNAL_STORAGE`
- `com.android.vending.BILLING`
- `com.android.vending.CHECK_LICENSE`
- `com.ezt.pdfreader.pdfviewer.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`
- `com.google.android.c2dm.permission.RECEIVE`
- `com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE`
- `com.google.android.gms.permission.AD_ID`

### 组件

- Activities：com.android.billingclient.api.ProxyBillingActivity, com.android.billingclient.api.ProxyBillingActivityV2, com.applovin.adview.AppLovinFullscreenActivity, com.applovin.adview.AppLovinFullscreenImmersiveActivity, com.applovin.creative.MaxCreativeDebuggerActivity, com.applovin.creative.MaxCreativeDebuggerDisplayedAdActivity, com.applovin.mediation.MaxDebuggerActivity, com.applovin.mediation.MaxDebuggerAdUnitDetailActivity, com.applovin.mediation.MaxDebuggerAdUnitWaterfallsListActivity, com.applovin.mediation.MaxDebuggerAdUnitsListActivity, com.applovin.mediation.MaxDebuggerCmpNetworksListActivity, com.applovin.mediation.MaxDebuggerDetailActivity, com.applovin.mediation.MaxDebuggerMultiAdActivity, com.applovin.mediation.MaxDebuggerTcfConsentStatusesListActivity, com.applovin.mediation.MaxDebuggerTcfInfoListActivity, com.applovin.mediation.MaxDebuggerTcfStringActivity, com.applovin.mediation.MaxDebuggerTestLiveNetworkActivity, com.applovin.mediation.MaxDebuggerTestModeNetworkActivity, com.applovin.mediation.MaxDebuggerUnifiedFlowActivity, com.applovin.mediation.MaxDebuggerWaterfallSegmentsActivity, com.applovin.sdk.AppLovinWebViewActivity, com.bytedance.sdk.openadsdk.activity.TTAdActivity, com.bytedance.sdk.openadsdk.activity.TTAppOpenAdActivity, com.bytedance.sdk.openadsdk.activity.TTCeilingLandingPageActivity, com.bytedance.sdk.openadsdk.activity.TTDelegateActivity, com.bytedance.sdk.openadsdk.activity.TTFullScreenExpressVideoActivity, com.bytedance.sdk.openadsdk.activity.TTFullScreenVideoActivity, com.bytedance.sdk.openadsdk.activity.TTInterstitialActivity, com.bytedance.sdk.openadsdk.activity.TTInterstitialExpressActivity, com.bytedance.sdk.openadsdk.activity.TTLandingPageActivity, com.bytedance.sdk.openadsdk.activity.TTPlayableLandingPageActivity, com.bytedance.sdk.openadsdk.activity.TTRewardExpressVideoActivity, com.bytedance.sdk.openadsdk.activity.TTRewardVideoActivity, com.bytedance.sdk.openadsdk.activity.TTVideoLandingPageLink2Activity, com.bytedance.sdk.openadsdk.activity.TTWebsiteActivity, com.compdfkit.tools.ai.activities.translate.AITranslateActivity, com.compdfkit.tools.annotation.pdfproperties.pdfsignature.CAddSignatureActivity, com.compdfkit.tools.annotation.pdfproperties.pdfstamp.CAddCustomStampActivity, com.compdfkit.tools.common.pdf.CPDFDocumentActivity, com.compdfkit.tools.common.pdf.CPDFDocumentSeparateActivity, com.ezt.ebook.EbookViewerActivity, com.ezt.ebook.OutlineActivity, com.ezt.lib.officeviewer.OfficeViewerActivity, com.ezt.pdfreader.pdfviewer.AppActivityHandle, com.ezt.pdfreader.pdfviewer.CollagePDFActivity, com.ezt.pdfreader.pdfviewer.EbookIntermediateActivity, com.ezt.pdfreader.pdfviewer.HandleHancomActivity, com.ezt.pdfreader.pdfviewer.HandleOtherActivity, com.ezt.pdfreader.pdfviewer.HandlePDFActivity, com.ezt.pdfreader.pdfviewer.ImageToPDFActivity, com.ezt.pdfreader.pdfviewer.LanguageActivity, com.ezt.pdfreader.pdfviewer.PDFViewerActivity, com.ezt.pdfreader.pdfviewer.PremiumActivity, com.ezt.pdfreader.pdfviewer.SplashScreen, com.ezt.pdfreader.pdfviewer.cloud.activities.CloudAuthActivity, com.ezt.pdfreader.pdfviewer.cloud.activities.CloudIntroActivity, com.ezt.pdfreader.pdfviewer.cloud.activities.CloudManagerActivity, com.ezt.pdfreader.pdfviewer.convert.ConvertActivity, com.ezt.pdfreader.pdfviewer.convert.ConvertResultActivity, com.ezt.pdfreader.pdfviewer.convert.search.SearchActivity, com.ezt.pdfreader.pdfviewer.hancom.HancomDocActivity, com.ezt.pdfreader.pdfviewer.handles.AppActivityHandle2, com.ezt.pdfreader.pdfviewer.handles.AppActivityHandle3, com.ezt.pdfreader.pdfviewer.handles.AppActivityHandle4, com.ezt.pdfreader.pdfviewer.handles.AppActivityHandle5, com.ezt.pdfreader.pdfviewer.handles.AppActivityHandle6, com.ezt.pdfreader.pdfviewer.handles.AppActivityHandle7, com.ezt.pdfreader.pdfviewer.handles.AppActivityHandle8, com.ezt.pdfreader.pdfviewer.handles.HandleHancomActivity2, com.ezt.pdfreader.pdfviewer.handles.HandleHancomActivity3, com.ezt.pdfreader.pdfviewer.handles.HandleHancomActivity4, com.ezt.pdfreader.pdfviewer.handles.HandleHancomActivity5, com.ezt.pdfreader.pdfviewer.handles.HandleHancomActivity6, com.ezt.pdfreader.pdfviewer.handles.HandleHancomActivity7, com.ezt.pdfreader.pdfviewer.handles.HandleHancomActivity8, com.ezt.pdfreader.pdfviewer.handles.HandleOtherActivity2, com.ezt.pdfreader.pdfviewer.handles.HandleOtherActivity3, com.ezt.pdfreader.pdfviewer.handles.HandleOtherActivity4, com.ezt.pdfreader.pdfviewer.handles.HandleOtherActivity5, com.ezt.pdfreader.pdfviewer.handles.HandleOtherActivity6, com.ezt.pdfreader.pdfviewer.handles.HandleOtherActivity7, com.ezt.pdfreader.pdfviewer.handles.HandleOtherActivity8, com.ezt.pdfreader.pdfviewer.handles.PDFViewerHandleActivity2, com.ezt.pdfreader.pdfviewer.handles.PDFViewerHandleActivity3, com.ezt.pdfreader.pdfviewer.handles.PDFViewerHandleActivity4, com.ezt.pdfreader.pdfviewer.handles.PDFViewerHandleActivity5, com.ezt.pdfreader.pdfviewer.handles.PDFViewerHandleActivity6, com.ezt.pdfreader.pdfviewer.handles.PDFViewerHandleActivity7, com.ezt.pdfreader.pdfviewer.handles.PDFViewerHandleActivity8, com.ezt.pdfreader.pdfviewer.imagepicker.ImagePickerActivity, com.ezt.pdfreader.pdfviewer.mj.MjPdfReader.ui.text_mode.TextModeActivity, com.ezt.pdfreader.pdfviewer.search.SearchActivity, com.ezt.pdfreader.pdfviewer.tools.activities.AddPageNumberActivity, com.ezt.pdfreader.pdfviewer.tools.activities.AddWatermarkActivity, com.ezt.pdfreader.pdfviewer.tools.activities.DocumentPickActivity, com.ezt.pdfreader.pdfviewer.tools.activities.ExtractPageActivity, com.ezt.pdfreader.pdfviewer.tools.activities.ManagePageActivity, com.ezt.pdfreader.pdfviewer.tools.activities.MergePdfActivity, com.ezt.pdfreader.pdfviewer.tools.activities.PagePickActivity, com.ezt.pdfreader.pdfviewer.tools.activities.ProcessDoneActivity, com.ezt.pdfreader.pdfviewer.tools.activities.SplitPdfActivity, com.ezt.pdfreader.pdfviewer.v3.MainActivity, com.ezt.pdfreader.pdfviewer.v4.activities.PDFSummarizeActivity, com.ezt.pdfreader.pdfviewer.v4.activities.PDFSummarizeResultActivity, com.ezt.pdfreader.pdfviewer.v4.activities.V4LanguageActivity, com.ezt.pdfreader.pdfviewer.v4.activities.V4OnboardActivity, com.ezt.pdfreader.pdfviewer.v4.activities.V4PurchaseActivity, com.ezt.pdfreader.pdfviewer.v4.activities.V4PurchaseAppUpdateActivity, com.ezt.pdfreader.pdfviewer.v4.activities.V4PurchaseBlueActivity, com.ezt.pdfreader.pdfviewer.v4.activities.V4PurchaseNoAdsActivity, com.ezt.pdfreader.pdfviewer.v5.activities.AllToolsActivity, com.ezt.pdfreader.pdfviewer.v5.activities.FolderActivity, com.ezt.pdfreader.pdfviewer.v5.activities.PhotoEditorWBActivity, com.ezt.pdfreader.pdfviewer.v5.activities.PreviewTemplateActivity, com.ezt.pdfreader.pdfviewer.v5.activities.ScannerActivity, com.ezt.pdfreader.pdfviewer.v5.activities.V5PurchaseActivity, com.facebook.CustomTabActivity, com.facebook.CustomTabMainActivity, com.facebook.FacebookActivity, com.facebook.ads.AudienceNetworkActivity, com.franmontiel.attributionpresenter.AttributionActivity, com.fyber.inneractive.sdk.activities.FyberReportAdActivity, com.fyber.inneractive.sdk.activities.InneractiveFullscreenAdActivity, com.fyber.inneractive.sdk.activities.InneractiveInternalBrowserActivity, com.fyber.inneractive.sdk.activities.InneractiveRichMediaVideoPlayerActivityCore, com.fyber.inneractive.sdk.activities.InternalStoreWebpageActivity, com.github.dhaval2404.imagepicker.ImagePickerActivity, com.google.android.gms.ads.AdActivity, com.google.android.gms.ads.NotificationHandlerActivity, com.google.android.gms.ads.OutOfContextTestingActivity, com.google.android.gms.common.api.GoogleApiActivity, com.gun0912.tedonactivityresult.ProxyActivity, com.gun0912.tedpermission.TedPermissionActivity, com.lxj.xpopup.util.XPermission$PermissionActivity, com.mbridge.msdk.activity.MBCommonActivity, com.mbridge.msdk.config.activity.MBRewardVideoActivity, com.mbridge.msdk.out.LoadingActivity, com.mbridge.msdk.reward.player.MBRewardVideoActivity, com.vungle.ads.internal.ui.VungleActivity, com.wxiwei.office.AppActivity2, com.wxiwei.office.AppActivitySeparate, com.yalantis.ucrop.UCropActivity, mu.bruno.lib.imagepicker.TedImagePickerActivity, mu.bruno.lib.imagepicker.zoom.TedImageZoomActivity, org.acra.dialog.CrashReportDialog, org.ebookdroid.ui.viewer.EbookViewActivity
- Services：androidx.room.MultiInstanceInvalidationService, androidx.work.impl.background.systemalarm.SystemAlarmService, androidx.work.impl.background.systemjob.SystemJobService, androidx.work.impl.foreground.SystemForegroundService, com.applovin.impl.adview.activity.FullscreenAdService, com.bytedance.sdk.openadsdk.multipro.aidl.BinderPoolService, com.ezt.pdfreader.pdfviewer.notification.handleNewFile.HandleNewFileService, com.google.android.datatransport.runtime.backends.TransportBackendDiscovery, com.google.android.datatransport.runtime.scheduling.jobscheduling.JobInfoSchedulerService, com.google.android.gms.ads.AdService, com.google.android.gms.measurement.AppMeasurementJobService, com.google.android.gms.measurement.AppMeasurementService, com.google.firebase.components.ComponentDiscoveryService, com.google.firebase.messaging.FirebaseMessagingService, com.google.firebase.sessions.SessionLifecycleService, com.google.mlkit.common.internal.MlKitComponentDiscoveryService, org.acra.sender.JobSenderService, org.acra.sender.LegacySenderService
- Receivers：androidx.profileinstaller.ProfileInstallReceiver, androidx.work.impl.background.systemalarm.ConstraintProxy$BatteryChargingProxy, androidx.work.impl.background.systemalarm.ConstraintProxy$BatteryNotLowProxy, androidx.work.impl.background.systemalarm.ConstraintProxy$NetworkStateProxy, androidx.work.impl.background.systemalarm.ConstraintProxy$StorageNotLowProxy, androidx.work.impl.background.systemalarm.ConstraintProxyUpdateReceiver, androidx.work.impl.background.systemalarm.RescheduleReceiver, androidx.work.impl.diagnostics.DiagnosticsReceiver, androidx.work.impl.utils.ForceStopRunnable$BroadcastReceiver, com.ezt.pdfreader.pdfviewer.broadcast.WidgetHourlyProvider, com.ezt.pdfreader.pdfviewer.broadcast.WidgetPinnedReceiver, com.ezt.pdfreader.pdfviewer.notifi.ScreenOnReceiver, com.ezt.pdfreader.pdfviewer.notification.MyBootReceiver, com.ezt.pdfreader.pdfviewer.notification.RecentFileReceiver, com.ezt.pdfreader.pdfviewer.notification.TimeTickReceiver, com.facebook.AuthenticationTokenManager$CurrentAuthenticationTokenChangedBroadcastReceiver, com.facebook.CurrentAccessTokenExpirationBroadcastReceiver, com.google.android.datatransport.runtime.scheduling.jobscheduling.AlarmManagerSchedulerBroadcastReceiver, com.google.android.gms.measurement.AppMeasurementReceiver, com.google.firebase.iid.FirebaseInstanceIdReceiver, com.mbridge.msdk.foundation.same.broadcast.NetWorkChangeReceiver
- Providers：androidx.core.content.FileProvider, androidx.startup.InitializationProvider, com.adjust.sdk.SystemLifecycleContentProvider, com.applovin.sdk.AppLovinInitProvider, com.compdfkit.core.document.CPDFSdkInitProvider, com.compdfkit.tools.common.provider.ComPDFKitToolsFileProvider, com.facebook.ads.AudienceNetworkContentProvider, com.facebook.internal.FacebookInitProvider, com.github.dhaval2404.imagepicker.ImagePickerFileProvider, com.google.android.gms.ads.MobileAdsInitProvider, com.google.firebase.provider.FirebaseInitProvider, com.google.mlkit.common.internal.MlKitInitProvider, com.gun0912.tedpermission.provider.TedPermissionProvider, com.mbridge.msdk.config.component.status.MBComponentLifecycleProvider, com.squareup.picasso.PicassoProvider, com.vungle.ads.VungleProvider, mu.bruno.lib.imagepicker.util.TedImagePickerContentProvider, org.acra.attachment.AcraContentProvider, ru.noties.jlatexmath.JLatexMathInitProvider

## SDK / Endpoint

### SDK

- `admob`
- `facebook`
- `firebase`

### Endpoint candidates

- http://www.apache.org/licenses/LICENSE-2.0
- https://msdn.microsoft.com/en-us/en-en/library/windows/desktop/dd317756(v=vs.85).aspx
- https://docs.oracle.com/javase/8/docs/technotes/guides/intl/encoding.doc.html
- http://www.apache.org/licenses/
- http://www.unicode.org/terms_of_use.html
- http://www.unicode.org/reports/tr44/
- http://www.unicode.org/reports/tr24/
- http://www.unicode.org/reports/tr24/#Assignment_Script_Values
- http://www.unicode.org/reports/tr24/#Assignment_ScriptX_Values
- http://sourceforge.net/adobe/aglfn/
- http://www.unicode.org/unicode/reports/tr9/
- http://jmathtex.sourceforge.net
- http://www.gnu.org/licenses/gpl.html
- http://forge.scilab.org/p/jlatexmath
- http://www.ams.org
- http://scripts.sil.org/OFL
- http://forge.scilab.org/index.php/p/jlatexmath
- http://fsf.org/
- http://www.gnu.org/licenses/
- http://www.gnu.org/licenses
- http://itextpdf.com/terms-of-use/
- http://www.javaspecialists.eu/archive/Issue033.html
- http://www.javaworld.com/javaworld/javatips/jw-javatip128.html
- http://www.unicode.org/copyright.html#Exhibit1
- http://www.unicode.org/Public/
- http://www.unicode.org/reports/
- http://www.unicode.org/cldr/data/
- http://www.unicode.org/copyright.html
- http://www.adobe.com/devnet/xmp/library/eula-xmp-library-java.html
- http://www.adobe.com/products/acrobat/acrrasianfontpack.html
- http://partners.adobe.com/public/developer/acrobat/index_advanced.html#pci
- http://partners.adobe.com/asn/developer/typeforum/unicodegn.html
- http://partners.adobe.com/asn/developer/typeforum/corporateuse.txt
- http://schemas.openxmlformats.org/drawingml/2006/main
- https://issues.apache.org/ooo/show_bug.cgi?id=125837
- http://schemas.openxmlformats.org/officeDocument/2006/relationships
- http://schemas.openxmlformats.org/presentationml/2006/main
- http://schemas.microsoft.com/office/powerpoint/2010/main
- http://www.jacoco.org/jacoco
- http://tizen.org/system/model_name

## Warnings

- apktool manifest decode skipped 2 split APK(s)
- binary AndroidManifest.xml decoded with apktool

## 下一步

- 真机/模拟器验证 onboarding、paywall、首个可感知价值和崩溃路径。
- 把 endpoint candidates 与 HAR / MITM / Frida 动态证据对齐，避免只凭静态字符串下结论。
- 多版本对比权限、SDK、endpoint、native libs 和资源路径变化。
- 订阅/广告 SDK 线索存在，后续需拆 paywall、free trial、退款和广告频率。