Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab1b003831efc140…

MALICIOUS

PDF

12.2 KB
MD5: b46540961e3aaee1819b480c8e6aaf38 SHA-1: 662b02f4799a4d3ca3027da7fa53e14e622154f2 SHA-256: ab1b003831efc140f566dba6d0b60a02d9c293613ab9fa3bc3a4868b9eb5fdc4
106 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution (via PDF)

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection identifying it as Win.Trojan.Agent-36281. The presence of embedded JavaScript, indicated by PDF_JAVASCRIPT and PDF_JS firings, suggests an attempt to execute malicious code. The ML classifier also strongly indicated maliciousness. The primary attack vector appears to be exploiting PDF vulnerabilities to deliver a trojan.

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
3409b93dfd353090a8c4ca1ef92d7ea0a46ee0b6a113b93cfa85b20780ad72e8		 pdf-javascript-stream PDF /JS object 76 at offset 0x369 11402 bytes

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