Is com.duckduckgo.mobile.android-51890000.apk safe?
No antivirus engine detected this established Android package, and no confirmed offensive, child-file, or researcher-intelligence indicator supports the isolated network heuristic.
All 79 antivirus engines avoided a malicious or suspicious detection, including 13 tier-1 engines that completed analysis without finding malware. A direct-IP heuristic warrants normal source verification, but no completed sandbox run exists and host-reputation coverage was incomplete.
72116b4bb7b2d17691…7956c1a760a18cRecommended next actions
Before installing
Install it only from Google Play, the developer's official store, or another source you independently trust.
If you already installed it
Keep normal device protection enabled and stop if the file behaves unexpectedly.
Intelligence
The saved assessment, checked against the scan evidence and recorded coverage.
The reasoning behind this verdict
This section explains the evidence supporting the verdict and keeps conflicting or missing signals visible.
All 79 antivirus engines avoided a malicious or suspicious detection, including 13 tier-1 engines that completed analysis without finding malware. A direct-IP heuristic warrants normal source verification, but no completed sandbox run exists and host-reputation coverage was incomplete.
The strongest evidence is the absence of detections across 79 antivirus engines, with no tier-1 malicious vote. The package has been observed for 943 days and has medium prevalence, which weighs against a newly introduced payload. No completed sandbox run is available, so the listed contacts cannot be treated as observed malicious runtime behavior. Static behavioral data contains nine ambient techniques and no offensive techniques, while the inspected child was not identified as malicious. The direct-IP heuristic is a counter-signal, but it lacks malware-family, engine, sandbox, or external-intelligence corroboration. Host-reputation checking covered only two contacts and therefore cannot establish that all listed no complete contacted-host reputation result was available.
What We Detected
None of 79 antivirus engines reported the APK as malicious or suspicious. Thirteen tier-1 engines completed analysis without a detection, and no engine supplied a malware-family label. Research intelligence also returned no CIRCL, MalwareBazaar, or YARAify match.
Threat Behavior
No completed sandbox run is available, so runtime conduct was not established. The static behavior record contains nine ambient techniques and zero offensive techniques. One heuristic noted direct-IP communications, but the host-reputation check inspected only two contacts and did not cover all 15 IP addresses and two URLs. The single extracted child was not identified as malicious, although its final classification remained unknown.
What To Do Now
Install the APK only if it came from DuckDuckGo's official distribution channel or a trusted app store, and verify the package identity before sideloading. Keep Android security scanning and endpoint protection enabled.
Where this verdict could be wrong3 caveats
- triggeredHeuristics[0].rule=MalwareTips.Synth.DirectIpC2 fired because direct-IP contacts were recorded without an application domain.
- contactedHosts.inspected=2 does not cover every distinct entry in behaviour.contactedIps and behaviour.contactedUrls, so no complete host-reputation result is available.
- droppedChildren.rollup.unknown=1 means the single extracted child was not conclusively classified.
These are the assessment's weak points. If you believe one applies to your file, report the verdict and we'll re-review it.
- 0/79 antivirus engines reported a malicious or suspicious result.
- tier1Malicious=0 and tier1ReportedClean=13.
- behaviour.offensiveCount=0.
- droppedChildren.hasMaliciousChild=false.
- externalIntel.yaraify.ruleCount=0 with no CIRCL or MalwareBazaar hit.
- MalwareTips.Synth.DirectIpC2 fired on direct-IP network artifacts.
- contactedHosts.inspected=2 provides incomplete reputation coverage for the listed contacts.
- behaviour.sandboxCount=0 means runtime behavior was not completed.
- The one extracted child remained unclassified.
Use the package only when obtained from DuckDuckGo's official release channel or a trusted app store. Keep device protection enabled and avoid sideloading copies from unverified sources.
Coverage & freshness
Complete means the check returned a usable result. It does not mean the file is safe.
Antivirus
Complete0 of 79 engines flagged the file.
Sandbox
PartialRuntime data is present, but no completed sandbox environment is recorded.
Network
Partial2 of 22 contacted hosts were cross-checked; coverage is incomplete.
YARA
Complete1 signature or behavior rule matched.
External intel
Complete3 of 3 independent reference sources completed.
Behavior
Plain-English impact first, then the observed runtime evidence.
Attack story
Runtime observations grouped by analysis stage. Arrows organize the stages; they do not claim chronology or causality.
Input file
The submitted object
- FileObserved
com.duckduckgo.mobile.android-51890000.apk
72116b4bb7b2d17691549ed3e820fb92232b8cd075c47c71837956c1a760a18c
01Uploaded file
Files
Created or changed
- Written fileObserved
downloads.db.lck
/data/user/0/com.duckduckgo.mobile.android/cache/downloads.db.lck
02Isolated runtime analysis - Written fileObserved
com.duckduckgo.app.installer.InstallSource.xml
/data/user/0/com.duckduckgo.mobile.android/shared_prefs/com.duckduckgo.app.installer.InstallSource.xml
03Isolated runtime analysis - +1 more recorded observation in Analyst mode
Network
Hosts contacted
- Contacted hostObserved
52.149.246.39
Contact observed during runtime.
04Isolated runtime analysis - Contacted hostObserved
192.229.211.108
Contact observed during runtime.
05Isolated runtime analysis - +1 more recorded observation in Analyst mode
5 recorded facts from one runtime window. Every fact remains independently traceable in Analyst mode.
Runtime behavior was not available
The report does not treat a missing runtime observation as a clean result.
Files this sample writes at runtime
This file drops 1 child at runtime. None are currently flagged malicious in our cache.
- 41febdefda4c78528521…26112eNever scannednever seen before
Detection & Forensics
Consensus, attribution, signatures, code structure, prevalence, and identity.
Evidence integrity
Chain of custody for the facts preserved in this report.
- 1rule hit recorded
- 0 / 79engines flagged
- 19sources in submission history
Why these facts are shown
Each statement identifies whether it was directly recorded or derived from saved scan facts.
- 01
0 of 79 antivirus engines flagged the file.
Verdict inputView chapterProvenanceObservedSourceAntivirus analysisObserved at - 02
No completed runtime observation is available for this file.
ProvenanceDerivedSourceRuntime coverageObserved at - 03
The hash has been submitted 19 times from 19 sources.
ProvenanceDerivedSourceSaved report factsObserved at - 04
Scanned file: com.duckduckgo.mobile.android-51890000.apk — 72116b4bb7b2d17691549ed3e820fb92232b8cd075c47c71837956c1a760a18c
ProvenanceObservedSourceUploaded fileObserved at - 05
File written: downloads.db.lck — /data/user/0/com.duckduckgo.mobile.android/cache/downloads.db.lck
ProvenanceObservedSourceIsolated runtime analysisObserved at - 06
File written: com.duckduckgo.app.installer.InstallSource.xml — /data/user/0/com.duckduckgo.mobile.android/shared_prefs/com.duckduckgo.app.installer.InstallSource.xml
ProvenanceObservedSourceIsolated runtime analysisObserved at - 07
Contacted host: 52.149.246.39 — Contact observed during runtime.
ProvenanceObservedSourceIsolated runtime analysisObserved at - 08
Contacted host: 192.229.211.108 — Contact observed during runtime.
ProvenanceObservedSourceIsolated runtime analysisObserved at
Detection sources at a glance
The available sources did not agree on a named threat category.
MalwareBazaar, YARAify, and CIRCL hashlookup completed and returned no entries for this hash.
Signatures and behavior heuristics
Behavioral heuristics matched patterns associated with malware. Corroborating evidence determines how much weight they carry.
The sample contacted an external IP address directly and no application domain was recorded. Direct-IP traffic also occurs in legitimate installers and infrastructure, so this is supporting context only and requires corroboration from host reputation and other runtime evidence.
Evidence52.149.246.39 · 192.229.211.108 · 74.125.128.94
0 of 79 engines flagged this file
View all 79 engine results
PE structure
Not applicablePE structure analysis applies to Windows executable formats, not this file type.
How widely this file has been seen
Moderate prevalence — neither rare nor common. No strong prior applies.
Fingerprint and provenance
- File name
- com.duckduckgo.mobile.android-51890000.apk
- Format
- Android
- Code signing
- Not applicable to this file type
- Size
- 60.1 MB
- Last analyzed
- Sep 19, 2026, 7:07 PM UTC
72116b4bb7b2d17691549ed3e820fb92232b8cd075c47c71837956c1a760a18cSafety & FAQ
Complete recovery guidance and answers for the next decision.
What to do now
This file appears low risk based on the evidence available now.
- Recovery step 01
Install it only from Google Play, the developer's official store, or another source you independently trust.
- Recovery step 02
A clean result reduces known risk, but it cannot guarantee that every new or targeted threat has been detected.
- Recovery step 03
Keep your antivirus and Windows updates switched on so you stay protected.
Safety FAQ
Direct answers grounded in the saved verdict and evidence in this report.
Is com.duckduckgo.mobile.android-51890000.apk safe?
What is com.duckduckgo.mobile.android-51890000.apk?
How many antivirus engines detected com.duckduckgo.mobile.android-51890000.apk?
What is the SHA-256 hash of com.duckduckgo.mobile.android-51890000.apk?
Is it safe to install com.duckduckgo.mobile.android-51890000.apk?
How up to date is this analysis of com.duckduckgo.mobile.android-51890000.apk?
Community
Member reviews and reports for this exact file hash.