Malicious PDF — malware analysis report

Static analysis result for SHA-256 98048aa5dd643b40…

MALICIOUS

PDF

22.3 KB Created: 2009-04-24 09:54:29 +02:00 Authoring application: PScript5.dll Version 5.2.2 (via Acrobat Distiller 7.0.5 (Windows))
MD5: 4ca6e7b96dfa79593d196001ccc58c2d SHA-1: 89bb721f87c026e3f920f8efb800a6f11a9749ad SHA-256: 98048aa5dd643b40ec3f819048eae387923154e0215b5d9c06f2fd42454e1468
76 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file contains obfuscated JavaScript, indicated by multiple heuristic firings related to PDF JavaScript. The JavaScript appears to be designed to execute malicious code, as suggested by the 'eval' calls and string concatenations used to construct commands. The specific intent of the script is unclear due to heavy obfuscation, but it is likely to download and execute a second-stage payload or perform other malicious actions.

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.