Is paper-api-1.21.11-R0.1-20251209.225848-3.jar safe?
No antivirus engine detected this JAR, and its sandbox run produced no malicious verdict, though three offensive-technique mappings merit routine caution.
The file received no detections from 74 antivirus engines, including all 17 tier-1 engines, and one completed sandbox did not issue a malicious verdict. Three offensive MITRE mappings were recorded, but they lack family, network, child-file, or external-intelligence corroboration and may reflect instrumentation or broad behavioral classification.
7ec623c368f72a6a73…dc77606a29809bRecommended next actions
Before opening or running
Open or run it only when its publisher and download source have been independently verified.
If you already opened or ran 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.
The file received no detections from 74 antivirus engines, including all 17 tier-1 engines, and one completed sandbox did not issue a malicious verdict. Three offensive MITRE mappings were recorded, but they lack family, network, child-file, or external-intelligence corroboration and may reflect instrumentation or broad behavioral classification.
The strongest evidence is the complete absence of detections across 74 antivirus engines, with all 17 tier-1 engines reporting no detection. One sandbox execution completed without a malicious verdict and recorded no contacted domains, IPs, or URLs. It nevertheless mapped activity to T1055, T1543.002, and T1562.001, so the runtime result is not entirely uneventful. The process-injection heuristic rests on a Java execution command and explicitly does not establish the exact technique or intent. No known-malware, researcher-rule, or malicious-child corroboration was found, although the seven child files lack individual determinate verdicts.
What We Detected
No antivirus engine flagged the sample: 0 of 74 reported it as malicious or suspicious, and all 17 tier-1 engines reported no detection. CIRCL, MalwareBazaar, and YARAify supplied no matching intelligence or rules.
Threat Behavior
One completed sandbox run produced no malicious sandbox verdict and recorded no contacted domains, IPs, or URLs. It did map activity to T1055, T1543.002, and T1562.001. The fired process-injection heuristic was based on Java execution evidence and does not by itself prove process injection or hostile intent. Seven child hashes were inspected with no malicious child found, but their individual verdicts remain unknown. No complete contacted-host reputation result is available because contactedHosts was not saved.
What To Do Now
Obtain the JAR from the official Paper project repository or build channel and verify its checksum against that source before deployment. Keep endpoint protection enabled and test the file in a restricted server environment if its origin cannot be confirmed.
Where this verdict could be wrong3 caveats
- The completed sandbox mapped activity to T1055, T1543.002, and T1562.001, which are offensive techniques and warrant caution despite the absence of an overall malicious sandbox verdict.
- contactedHosts=null, so no complete host-reputation cross-check is available; however, the sandbox recorded no domains, IPs, or URLs.
- All 7 inspected dropped children have unknown individual verdicts, so droppedChildren.hasMaliciousChild=false is not equivalent to seven confirmed-benign children.
These are the assessment's weak points. If you believe one applies to your file, report the verdict and we'll re-review it.
- 0/74 antivirus engines reported a detection.
- All 17 tier-1 engines reported no detection.
- behaviour.hasMaliciousSandboxVerdict=false after one completed run.
- No contacted domains, IPs, or URLs were recorded.
- No MalwareBazaar, CIRCL, or YARAify hit was present.
- Sandbox mappings include T1055, T1543.002, and T1562.001.
- MalwareTips.Synth.ProcessInjection fired from runtime evidence.
- Seven dropped-child verdicts remain individually unknown.
- No complete contacted-host reputation cross-check is available.
Use the file only if its SHA-256 can be matched to the official Paper distribution or trusted build source. Keep endpoint protection enabled and isolate initial deployment when provenance is uncertain.
Coverage & freshness
Complete means the check returned a usable result. It does not mean the file is safe.
Antivirus
Complete0 of 74 engines flagged the file.
Sandbox
Complete1 isolated runtime environment contributed observations.
Network
Not runNo contacted-host reputation check is recorded.
No timestamp recordedYARA
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.
Runtime flight recorder
Capture complete- 1isolated sandbox run
- 15MITRE ATT&CK techniques
- 11spawned processes
- 0network contacts
- 13filesystem & mutex artifacts
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
paper-api-1.21.11-R0.1-20251209.225848-3.jar
7ec623c368f72a6a7326a2d903397a537b0c4cad86d6f63f65dc77606a29809b
01Uploaded file
Processes
Runtime execution
- ProcessObserved
Observed process
"C:\Program Files\Java\jre-1.8\bin\javaw.exe" -jar "C:\Users\<USER>\Desktop\download.jar"
02Isolated runtime analysis - ProcessObserved
Observed process
C:\Windows\system32\icacls.exe C:\ProgramData\Oracle\Java\.oracle_jre_usage /grant "everyone":(OI)(CI)M
03Isolated runtime analysis - +1 more recorded observation in Analyst mode
Files
Created or changed
- Written fileObserved
5636
C:\Users\<USER>\AppData\Local\Temp\hsperfdata_<USER>\5636
04Isolated runtime analysis - Written fileObserved
3903daac9bc4a3b7.timestamp
C:\ProgramData\Oracle\Java\.oracle_jre_usage\3903daac9bc4a3b7.timestamp
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.
What this file did when executed
This file was detonated in 1 sandbox and its runtime behaviour was observed.
Adversary techniques mapped to the MITRE ATT&CK framework.
- C:\Users\<USER>\AppData\Local\Temp\hsperfdata_<USER>\5636
- C:\ProgramData\Oracle\Java\.oracle_jre_usage\3903daac9bc4a3b7.timestamp
- C:\ProgramData\Oracle\Java\.oracle_jre_usage\17dfc292991c8786.timestamp
- C:\Users\user\AppData\Local\Temp\hsperfdata_user
- C:\Users\user\AppData\Local\Temp\hsperfdata_user\6448
- C:\Users\user\AppData\Local\Temp\hsperfdata_user\1884
- /tmp/hsperfdata_root/4991
Files this sample writes at runtime
This file drops 7 children at runtime. None are currently flagged malicious in our cache.
- bbd160db8430cb282234…6a9920Never scannednever seen before
- 1b7ace71566c749f94c7…baf433Never scannednever seen before
- d86034efc59b9081c985…5bac9aNever scannednever seen before
- 3f8096f14540c8e18e4e…ad10b8Never scannednever seen before
- d87c5f3cdfb5b7c0510e…1ade9eNever scannednever seen before
- 44a3bab2c338e3bca24c…d3b9e7Never scannednever seen before
- ac941ead01d5451a7a9f…253227Never 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 / 74engines flagged
- 6sources 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 74 antivirus engines flagged the file.
Verdict inputView chapterProvenanceObservedSourceAntivirus analysisObserved at - 02
1 high-confidence signature or behavior rule matched this file.
Verdict inputView chapterProvenanceDerivedSourceSignature and behavior rulesObserved at - 03
The hash has been submitted 7 times from 6 sources.
ProvenanceDerivedSourceSaved report factsObserved at - 04
Scanned file: paper-api-1.21.11-R0.1-20251209.225848-3.jar — 7ec623c368f72a6a7326a2d903397a537b0c4cad86d6f63f65dc77606a29809b
ProvenanceObservedSourceUploaded fileObserved at - 05
Observed process — "C:\Program Files\Java\jre-1.8\bin\javaw.exe" -jar "C:\Users\<USER>\Desktop\download.jar"
ProvenanceObservedSourceIsolated runtime analysisObserved at - 06
Observed process — C:\Windows\system32\icacls.exe C:\ProgramData\Oracle\Java\.oracle_jre_usage /grant "everyone":(OI)(CI)M
ProvenanceObservedSourceIsolated runtime analysisObserved at - 07
File written: 5636 — C:\Users\<USER>\AppData\Local\Temp\hsperfdata_<USER>\5636
ProvenanceObservedSourceIsolated runtime analysisObserved at - 08
File written: 3903daac9bc4a3b7.timestamp — C:\ProgramData\Oracle\Java\.oracle_jre_usage\3903daac9bc4a3b7.timestamp
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
A community signature or high-severity behavioral heuristic matched. Signatures identify known patterns; heuristics are strong leads but are not proof on their own.
The saved runtime evidence maps this activity to MITRE T1055 (Process Injection). The mapping supports possible process injection, but it does not prove the exact injection method or the operator's intent.
Evidence"C:\Program Files\Java\jre-1.8\bin\javaw.exe" -jar "C:\Users\<USER>\Desktop\download.jar"
0 of 74 engines flagged this file
View all 74 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
- paper-api-1.21.11-R0.1-20251209.225848-3.jar
- Format
- JAR
- Code signing
- Not applicable to this file type
- Size
- 2.7 MB
- Last analyzed
- Sep 15, 2026, 11:18 PM UTC
7ec623c368f72a6a7326a2d903397a537b0c4cad86d6f63f65dc77606a29809bSafety & 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
Open or run it only when its publisher and download source have been independently verified.
- 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 paper-api-1.21.11-R0.1-20251209.225848-3.jar safe?
What is paper-api-1.21.11-R0.1-20251209.225848-3.jar?
How many antivirus engines detected paper-api-1.21.11-R0.1-20251209.225848-3.jar?
What is the SHA-256 hash of paper-api-1.21.11-R0.1-20251209.225848-3.jar?
Is it safe to open or run paper-api-1.21.11-R0.1-20251209.225848-3.jar?
How up to date is this analysis of paper-api-1.21.11-R0.1-20251209.225848-3.jar?
Community
Member reviews and reports for this exact file hash.