Malicious PDF — malware analysis report

Static analysis result for SHA-256 333313e3d0977a7e…

MALICIOUS

PDF

47.1 KB Created: 2006-02-16 15:03:51 -08:00 Authoring application: Acrobat PDFMaker 7.0.5 for PowerPoint (via substr)
MD5: 5087f1ee363ac971c544e47d62693594 SHA-1: af4ebb1f16b9de899bc5a5efa55e06d77cf31ec5 SHA-256: 333313e3d0977a7ef4fb0211a7f1279b0b6d9501f670a8c7be47525ea445bc77
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 further confirms its malicious nature. The embedded JavaScript, which is a large stream, is likely responsible for exploiting a vulnerability within the PDF reader to execute arbitrary code, probably to download and run a secondary payload. The document body content is not user-facing and appears to be metadata or internal PDF structure information.

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
6a5c157f34c3f33f0db03acd84a9081f61d740d18a23dc0c4227424abd678f89		 pdf-javascript-stream PDF /JS object 76 at offset 0x99C 45498 bytes

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