Malicious PDF — malware analysis report

Static analysis result for SHA-256 f356f5230295cd6d…

MALICIOUS

PDF

140.6 KB Created: 2011-04-19 14:23:41 +08:00 Authoring application: Acrobat PDFMaker 9.0 Word 版 (via Acrobat Distiller 9.0.0 (Windows))
MD5: 3f2aa137fca4f1ae6b1d88e5779c429b SHA-1: d9bb5f524113929650e5acc16bf96ecb6bfd280b SHA-256: f356f5230295cd6d42ef7e1f2d6f6fe2b0eadab4a879aee336868186ea7df7e5
64 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1559.001 Component Object Model Hijacking

The PDF file exhibits multiple heuristic firings indicating the presence of embedded JavaScript and RichMedia (Flash). The embedded JavaScript file, 'javascript_obj0027_000.js', is likely responsible for executing malicious code. The combination of these elements points towards an exploit attempt or a delivery mechanism for further malicious payloads.

Heuristics 5

  • RichMedia (Flash) high PDF_RICHMEDIA
    PDF contains /RichMedia (Adobe Flash) which is a historic exploit vector
  • 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 file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
  • 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/pdf/1.3/
    • 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/pdfx/1.3/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0027_000.js
773a96642c5a1e84d5aff10c41457e0032028bdd894b944dd97864cea8303bc4		 pdf-javascript-stream PDF /JS object 27 at offset 0x1FB16 3810 bytes

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