Malicious PDF — malware analysis report

Static analysis result for SHA-256 51b1453dcf12bbc4…

MALICIOUS

PDF

71.7 KB Created: 2009-11-15 19:41:70 Authoring application: PDF Library 4.3.9 (via PDF Library 3.9.7)
MD5: 41a22ce2fb6370c314ea6bd92deeb87f SHA-1: dda24285ffd625bd911000bfd00f4cfebf00f36a SHA-256: 51b1453dcf12bbc45e79645ceb4f4740b8d73c8941372e21aa61cfd641b0b9e0
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' heuristic firings. ClamAV detection as 'Pdf.Dropper.Agent-7212705-0' strongly suggests its role as a dropper. The large embedded JavaScript stream further supports the conclusion that it is designed to download and execute a second-stage payload. The document body was unreadable, preventing a more specific analysis of the lure.

Heuristics 3

  • ClamAV: Pdf.Dropper.Agent-7212705-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7212705-0
  • 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
9d46524b72f7ba443c7f5829b9a0c1e445f11b059e43ad5a04d107e03c4ea3b9		 pdf-javascript-stream PDF /JS object 7 at offset 0x1A5 146359 bytes

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