Malicious PDF — malware analysis report

Static analysis result for SHA-256 85d6c50242ddd31f…

MALICIOUS

PDF

7.3 KB Created: 2010-09-16 18:52:20 Authoring application: Qabifagevafa (via 91930Tiqotezozav)
MD5: 6dc8cbf399d1a8d03dc8b2cc2af799e7 SHA-1: 854fdfa39ec73ba54e18d14578321c0d2209810e SHA-256: 85d6c50242ddd31f3d904e534a9c00532b6d7e6ec9cb494a023d585d2bbc64ae
76 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.001 Spearphishing Attachment

The PDF file was detected as malicious by ClamAV due to obfuscated JavaScript content. The presence of embedded JavaScript streams and actions indicates an attempt to execute code upon opening the document. The exact intent of the script is unclear due to obfuscation, but it is likely designed to download and execute a secondary payload.

Heuristics 3

  • ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
  • 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_obj0011_000.js
ff85b44f7d06834e69a161aee8e28b7340c56fef50ee1649100cb6f376ea5386
pdf-javascript-stream PDF /JS object 11 at offset 0x1364 2324 bytes