Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9a628b8b1e8948b…

MALICIOUS

PDF

58.6 KB Created: 2006-02-16 15:03:51 -08:00 Authoring application: lice (via ubst)
MD5: 98469eb36de784c9db7481d13b59dbd3 SHA-1: a7b3991b05d711c9160ed5c32a9a89e34d05ff0b SHA-256: e9a628b8b1e8948bcdef8e3e6d7e03371539816a7f79229ec7f63e203bb0fd4e
106 Risk Score

Malware Insights

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

The PDF was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Exploit.Dropped-94', and an ML classifier with a high confidence score. The presence of embedded JavaScript, indicated by PDF_JAVASCRIPT and PDF_JS heuristics, suggests the file attempts to execute malicious code. This is consistent with an exploit-based attack pattern designed to drop a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • ClamAV: Pdf.Exploit.Dropped-94 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Dropped-94
  • 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
e3d84e15f5c623a45ed72efc816bcd39dc08e6f11e0326d788fc140d2492d0b4		 pdf-javascript-stream PDF /JS object 76 at offset 0x955 50166 bytes

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