Malicious PDF — malware analysis report

Static analysis result for SHA-256 48cb62912e28a83d…

MALICIOUS

PDF

103.1 KB Created: 2009-07-08 10:53:46 +08:00 Authoring application: Acrobat Distiller 7.0 (Windows)
MD5: 5ee49a53ba6e254e7796f672ddd0528f SHA-1: b91e9f010b64ca7e94389b6df0a6c80726b779de SHA-256: 48cb62912e28a83d3176fbfd68eee9bf455a4220c8cb488126e47360480b45e6
76 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript, which is triggered by the CVE-2009-4324 vulnerability related to media.newPlayer. This JavaScript is designed to execute arbitrary code, likely for downloading and executing a second-stage payload. The document body is heavily obfuscated and does not provide clear user-facing content, further indicating a malicious intent.

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
7fc90138dd759812a899a73e2e48f59e59405a49038d58f7d2e30c45f79528e9		 pdf-javascript-stream PDF /JS object 17 at offset 0x4DA 3098 bytes
js_property_alias_stage_000.js
f2a1ec7e2a971c61cb902cce3430b1d8ff12153f0b7f9fc8b19c9798d5b57aff		 deobfuscated-js JavaScript hex-escape property alias normalized stage at offset 0x4DA 2921 bytes

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