Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e57e96fdc81b37f…

MALICIOUS

PDF

559.4 KB Created: 2009-07-08 10:53:46 +08:00 Authoring application: Acrobat Distiller 7.0 (Windows)
MD5: 962d01d3abf57a4b4d7d4494f9bee302 SHA-1: 3eb8061a7c95dc8100f6655d0b506626a17613cd SHA-256: 3e57e96fdc81b37fb85d6952d6757b03f1813ea0fda13615d35e39005fe1dfab
76 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript, identified by the PDF_JAVASCRIPT and PDF_JS heuristics. The critical CVE_2009_4324 heuristic indicates the exploitation of a known vulnerability related to media player functionality within PDFs, which is used to execute JavaScript. This script likely downloads and executes a secondary payload, as suggested by the nature of such exploits. No specific malware family was 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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