# All PDF Reader

状态：active
Platform：android
Package：com.ezt.pdfreader.pdfviewer
Version：2.0.0
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：20
- 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 23 permissions（source: `AndroidManifest.xml`，status: `verified`）
- [high] Engine/framework markers: native（source: `APK file inventory`，status: `verified`）
- [high] Static strings include 20 endpoint candidates（source: `Text/string scan`，status: `verified`）
- [high] Package contains 13 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.RECEIVE_BOOT_COMPLETED`
- `android.permission.SCHEDULE_EXACT_ALARM`
- `android.permission.WAKE_LOCK`
- `android.permission.WRITE_EXTERNAL_STORAGE`
- `com.android.vending.BILLING`
- `com.applovin.array.apphub.permission.BIND_APPHUB_SERVICE`
- `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.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.mediation.hybridAds.MaxHybridMRecAdActivity, com.applovin.mediation.hybridAds.MaxHybridNativeAdActivity, com.applovin.sdk.AppLovinWebViewActivity, com.bytedance.sdk.openadsdk.activity.TTAdActivity, com.bytedance.sdk.openadsdk.activity.TTAppOpenAdActivity, 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.ezt.pdfreader.pdfviewer.AppActivity, com.ezt.pdfreader.pdfviewer.AppActivityHandle, com.ezt.pdfreader.pdfviewer.GuildPermissionActivity, com.ezt.pdfreader.pdfviewer.ImageToPDF, com.ezt.pdfreader.pdfviewer.LanguageActivity, com.ezt.pdfreader.pdfviewer.LanguageActivitySetting, com.ezt.pdfreader.pdfviewer.MainActivity, com.ezt.pdfreader.pdfviewer.MainActivityV2, com.ezt.pdfreader.pdfviewer.PDFViewerActivity, com.ezt.pdfreader.pdfviewer.PDFViewerActivityHandleV2, com.ezt.pdfreader.pdfviewer.PDFViewerHandleActivity, com.ezt.pdfreader.pdfviewer.PdfCreater, com.ezt.pdfreader.pdfviewer.PremiumActivity, com.ezt.pdfreader.pdfviewer.SplashScreen, com.ezt.pdfreader.pdfviewer.convert.ConvertActivity, com.ezt.pdfreader.pdfviewer.convert.ConvertResultActivity, com.ezt.pdfreader.pdfviewer.convert.search.SearchActivity, 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.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.mainv3.MainActivity, com.ezt.pdfreader.pdfviewer.mj.MjPdfReader.ui.about.AboutActivity, com.ezt.pdfreader.pdfviewer.mj.MjPdfReader.ui.bookmark.BookmarksActivity, com.ezt.pdfreader.pdfviewer.mj.MjPdfReader.ui.home.HomeActivity, com.ezt.pdfreader.pdfviewer.mj.MjPdfReader.ui.link.LinksActivity, com.ezt.pdfreader.pdfviewer.mj.MjPdfReader.ui.main.MainIntroActivity, com.ezt.pdfreader.pdfviewer.mj.MjPdfReader.ui.search.SearchActivity, com.ezt.pdfreader.pdfviewer.mj.MjPdfReader.ui.settings.SettingsActivity, com.ezt.pdfreader.pdfviewer.mj.MjPdfReader.ui.text_mode.TextModeActivity, com.ezt.pdfreader.pdfviewer.search.SearchActivity, 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.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.mbridge.msdk.activity.MBCommonActivity, com.mbridge.msdk.newreward.player.MBRewardVideoActivity, com.mbridge.msdk.out.LoadingActivity, com.mbridge.msdk.reward.player.MBRewardVideoActivity, com.theartofdev.edmodo.cropper.CropImageActivity, com.vungle.ads.internal.ui.VungleActivity, com.wxiwei.office.AppActivity2, com.yalantis.ucrop.UCropActivity, org.acra.dialog.CrashReportDialog
- 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, 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
- Providers：androidx.core.content.FileProvider, androidx.startup.InitializationProvider, com.applovin.sdk.AppLovinInitProvider, 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.gun0912.tedpermission.provider.TedPermissionProvider, org.acra.attachment.AcraContentProvider

## SDK / Endpoint

### SDK

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

### Endpoint candidates

- http://www.apache.org/licenses/
- https://github.com/ReactiveX/RxJava.git
- 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.apache.org/licenses/LICENSE-2.0
- 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://www.jacoco.org/jacoco

## 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。