Malicious PDF — malware analysis report

Static analysis result for SHA-256 15a6af15f3c65e6e…

MALICIOUS

PDF

5.0 KB
MD5: 92101427d1681e8530c692de4d19bab5 SHA-1: c254a996b5b247147b22a9a9e0dd91b635b4227e SHA-256: 15a6af15f3c65e6e37a36b6bd5e2c4b926b909af442cf066667c26c51da36bbd
106 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1566.001 Spearphishing Attachment

The PDF file was flagged by a machine learning classifier and ClamAV with a critical heuristic for obfuscated JavaScript. The embedded JavaScript is likely designed to download and execute a second-stage payload, a common technique for malware delivery via malicious documents. The presence of JavaScript actions and streams strongly indicates this attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
  • 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.