Malicious PDF — malware analysis report

Static analysis result for SHA-256 d75a082e4f8a314a…

MALICIOUS

PDF

41.2 KB Created: 2009-07-08 10:53:46 +08:00 Authoring application: Acrobat Distiller 7.0 (Windows)
MD5: 005f3392486d694574730c08bda10ddb SHA-1: 63e2f9a6dadf6c2adbceb4bdb334f34bfb8da8de SHA-256: d75a082e4f8a314ae0c661d63d5da7d302ce87ea3843f082af6d191838333b94
78 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript, which is triggered by the CVE-2009-4324 vulnerability. The heuristics indicate that this JavaScript is obfuscated and likely responsible for downloading and executing a second-stage payload. The specific JavaScript streams extracted, 'javascript_obj0017_000.js' and 'js_property_alias_stage_000.js', further support this analysis. No specific malware family could be confidently identified.

Heuristics 5

  • 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.
  • Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • 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
4fca79cd30d80cf3472f33bb0c0f86e5752b640e2a0b1bb35ec5df77a519463b		 pdf-javascript-stream PDF /JS object 17 at offset 0x4DA 4380 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 eval/decoder/string-building token(s).
js_property_alias_stage_000.js
b4a76081ac802f49f0ca7ec09f3cdc28e11802afe3dbc6700f8de52754770c35		 deobfuscated-js JavaScript hex-escape property alias normalized stage at offset 0x4DA 4068 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 eval/decoder/string-building token(s).

Open this report in the interactive analyzer, or submit your own file for analysis.