Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d55aef4b9f09d21…

MALICIOUS

PDF

183.3 KB
MD5: 2b1e1599ddf0342e83c44806aff990c9 SHA-1: 9470dbe751725b90cb7e51a79c605ee9c072c74a SHA-256: 3d55aef4b9f09d21af42138659851bbbe2e34aa21912637f8a1e128f2af5d15d
76 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 JavaScript/JScript T1204.002 Malicious File Execution: User Execution: Malicious File

The PDF file contains embedded JavaScript, identified by the PDF_JAVASCRIPT and PDF_JS heuristics. The critical CVE_2009_4324 heuristic indicates that the JavaScript is designed to exploit a known vulnerability (media.newPlayer) to execute code. The embedded JavaScript likely serves to download and execute a second-stage payload, although the specific URL or payload could not be determined from the provided evidence. The benign URLs extracted are not considered malicious.

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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