Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfc4b5ad0777acb4…

MALICIOUS

PDF

47.1 KB Created: 2006-02-16 15:03:51 -08:00 Authoring application: Acrobat PDFMaker 7.0.5 for PowerPoint (via subst)
MD5: 8f4933e9c26088a101d203287b91e3b4 SHA-1: 797d54e8a6ee3ec7861381cd70ab8e76ab1b0f9f SHA-256: cfc4b5ad0777acb4a0b882cd93b9d46fe9971c6e8d22491d676ad47b56c7ec0d
76 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. 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
b38c2e8e92110b97ab76b82fe31b3068a10a311cc781a15433f50f05cd435cf5		 pdf-javascript-stream PDF /JS object 76 at offset 0x99B 45427 bytes

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