PDF malware analysis — malicious · 503a0f5e0ea09faf

MALICIOUS

PDF

79.1 KB

MD5: b0c6baa28db5e66ea542c3c21ffed423 SHA-1: 3329b2ffecf67c78cd97dd9f8fb8b49124acdfa8 SHA-256: 503a0f5e0ea09fafcd7f6a40455bfffac6b0734e3cf253b441c5bedd494c71aa

78 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: Malicious File

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The critical CVE_2009_4324 heuristic specifically points to the exploitation of a vulnerability related to media.newPlayer, which is known to be used for arbitrary code execution. The deobfuscated JavaScript streams suggest an attempt to download and execute a secondary payload, although the exact URL or execution method is not directly recoverable from the provided evidence. The presence of obfuscated JavaScript and the specific CVE exploit strongly suggest a malicious intent to compromise the user's system.

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.
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.

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0008_000.js` `b8429d9fe8361ccf538efd335bd7146d93b3d1cfb568465a4584de1b7ee4c04e`	pdf-javascript-stream	PDF /JS object 8 at offset 0x1E7	3583 bytes
`legacy_pdfkit_stage_000.js` `a2f7c6291810a92401175598091c19a8a02dd8a04806b9c018726297b495b17b`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x101A	2552 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_001.js` `42025b552c7960b53abcd8cd732b01c8d109eccfdfefc352b9826c4d5807d414`	deobfuscated-js	cross-stage annotation API aliases at offset 0x1E7	81 bytes

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