Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bf9a33f8684c7fc…

MALICIOUS

PDF

47.7 KB Created: 2006-02-16 15:03:51 -08:00 Authoring application: Acrobat PDFMaker 7.0.5 for PowerPoint (via subst)
MD5: 411e2cc7ce585255df9f181dac82bfb5 SHA-1: f544321acec2bef07ef3db1346b1175a2d07c079 SHA-256: 3bf9a33f8684c7fc702be4236bcd43cdb10295aad4b60e1a6fe774ba0858f30a
76 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript, indicated by heuristic firings and the presence of a JavaScript object. ClamAV detection as 'Pdf.Exploit.Dropped-94' strongly suggests exploitation of a known PDF vulnerability. The embedded JavaScript is likely responsible for downloading and executing a secondary payload, which is a common technique for initial access.

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
2672db87d61d9affab84f0cfbb6d61614a6baaf7a1207d8d434cd17c62edbeb2		 pdf-javascript-stream PDF /JS object 76 at offset 0x99B 46032 bytes

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