Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6b14da2d4b7fa6a…

MALICIOUS

PDF

57.9 KB Created: 2009-11-15 19:41:70 Authoring application: PDF Library 4.3.9 (via PDF Library 3.9.7)
MD5: e674215d0faea8a235c5a050f1e28631 SHA-1: 0cba6cf1ecbdeac9dc918c5b34ef056c6df00a3f SHA-256: f6b14da2d4b7fa6a0668f27810aadd4ad9b84cb4dd0de1c079e535898598ce9a
106 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics, including a critical ClamAV detection for 'Pdf.Dropper.Agent-7324922-0' and a high ML classifier score. The presence of embedded JavaScript, indicated by 'PDF_JAVASCRIPT' and 'PDF_JS' firings, suggests the file is designed to execute malicious code. The JavaScript likely downloads and executes a second-stage payload, a common dropper behavior.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 3

  • ClamAV: Pdf.Dropper.Agent-7324922-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7324922-0
  • 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_obj0007_000.js
d3f4cecdad433359edac20a2bcfa215afafa01dd67ff2593970620a14dcccead		 pdf-javascript-stream PDF /JS object 7 at offset 0x1A5 116618 bytes

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