Malicious PDF — malware analysis report

Static analysis result for SHA-256 09b2e4fd4c7ae67d…

MALICIOUS

PDF

5.9 KB
MD5: db14431ddaf1d002f8af98c4ce774489 SHA-1: 3bb215bf62bbf135e906318daccf936459118316 SHA-256: 09b2e4fd4c7ae67dda65a3dac7d6bf69677a21f93521153c85bd73ca62f9b0ab
154 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file exhibits multiple high-severity heuristic firings, including ML classification and ClamAV detection for obfuscated content. The presence of embedded JavaScript and RichMedia (Flash) suggests an attempt to execute malicious code. The obfuscated document body further indicates an effort to conceal the malicious intent, likely to download and execute a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 5

  • ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
  • RichMedia (Flash) high PDF_RICHMEDIA
    PDF contains /RichMedia (Adobe Flash) which is a historic exploit vector
  • 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.
  • Embedded file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload