Malicious PDF — malware analysis report

Static analysis result for SHA-256 a32f634c21970915…

MALICIOUS

PDF

59.1 KB Created: 2009-07-08 10:53:46 +08:00 Authoring application: Acrobat Distiller 7.0 (Windows)
MD5: 44c58db2a743905c26ff589ffe4a6756 SHA-1: 3f006e7849bb9c45065ab8ce8b26929b8258acd0 SHA-256: a32f634c21970915fb4355008b1fe31b55f19d4c11e73a54763e89e25a3340ff
76 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript that leverages the CVE-2009-4324 vulnerability. The heuristic firings indicate that this JavaScript is designed to be executed upon opening the PDF, likely to download and execute a secondary payload. No specific malware family could be identified.

Heuristics 4

  • media.newPlayer — CVE-2009-4324 critical CVE exact CVE_2009_4324
    PDF JavaScript calls media.newPlayer — CVE-2009-4324 is a use-after-free in Adobe Reader's multimedia plugin triggered by media.newPlayer(). Actively exploited as a zero-day in December 2009. (identified after JavaScript deobfuscation)
  • 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/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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0017_000.js
3238ab43d64be757f86271f073632d6616e7da29a9a1d53b880c68b34a7f9c55		 pdf-javascript-stream PDF /JS object 17 at offset 0x4DA 3010 bytes
js_property_alias_stage_000.js
d375791f9ac52f9cb6f56a475cfd7a26b71c2d487e246cdeb22c4d25d56e80f0		 deobfuscated-js JavaScript hex-escape property alias normalized stage at offset 0x4DA 2833 bytes

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