Malicious PDF — malware analysis report

Static analysis result for SHA-256 21b4964c4e92c568…

MALICIOUS

PDF

34.5 KB Created: 2012-10-18 16:14:05 +04:00 Authoring application: Adobe Acrobat 7.0 (via Adobe Acrobat 7.0 Image Conversion Plug-in)
MD5: 59ba62e0970c3b928e8fc8190a815a99 SHA-1: fc37f6f141f52e7cf17e615af626ba4cc488ecfd SHA-256: 21b4964c4e92c56836c344003af9cf1a0a2e8a2e6c096ce671063f3c9677c82d
76 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV with the signature Pdf.Dropper.Agent-7238445-0. Static analysis revealed embedded JavaScript, indicating the document is likely a dropper. The JavaScript is expected to download and execute a second-stage payload, although the exact mechanism is not fully discernible from the provided evidence. The presence of JavaScript actions and embedded JS streams strongly supports this conclusion.

Heuristics 4

  • ClamAV: Pdf.Dropper.Agent-7238445-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7238445-0
  • 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.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/xap/1.0/
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/pdf/1.3/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0106_000.js
ecb8610703c73a03c251c350617ead9612c8ef3feefd568ec9e0c86ac99e6fcd		 pdf-javascript-stream PDF /JS object 106 at offset 0x86B9 1305 bytes

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