Win.Trojan.Agent-36281 — PDF malware analysis

Static analysis result for SHA-256 258b28747c77c67c…

MALICIOUS

PDF

12.5 KB
MD5: b3b56cbbe77ddf1b7d67f994b195138d SHA-1: ed974446f78fbdb6fbaf8142711c6f862f46ba76 SHA-256: 258b28747c77c67c188eace59d732b8881c59ed3962b42a9ee4ca6596f9bfaf8
106 Risk Score

Malware Insights

Win.Trojan.Agent-36281 · confidence 98%

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious File

The PDF was flagged by a machine learning classifier with high confidence and detected by ClamAV as Win.Trojan.Agent-36281. It contains embedded JavaScript, indicating an attempt to execute malicious code upon opening. The primary attack vector appears to be leveraging PDF vulnerabilities to deliver a trojanized payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • ClamAV: Win.Trojan.Agent-36281 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.Agent-36281
  • JavaScript action low PDF_JAVASCRIPT
    PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0076_000.js
43da1c2cab0fff05a75cfabfaaef489f296f414f40236300af3d4f25116f9b32		 pdf-javascript-stream PDF /JS object 76 at offset 0x369 11672 bytes

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