PDF malware analysis — malicious · f75097514fe567b3

MALICIOUS

PDF

99.0 KB

MD5: 9369d9574eae95ee40aeea8e7465883c SHA-1: cbf0c9c8b104bb8544cfba050c9df7ceac51e296 SHA-256: f75097514fe567b30199a0c610750aa6c07cf322fadf15e3645d2b10aad39ed3

78 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript T1204.002 Malicious File

The PDF document contains embedded JavaScript, indicated by PDF_JAVASCRIPT and PDF_JS heuristics. A critical heuristic identifies the CVE-2009-4324 vulnerability related to media.newPlayer, suggesting the script is designed to exploit this flaw. The deobfuscated JavaScript, legacy_pdfkit_stage_000.js, likely facilitates the download and execution of a secondary payload, contributing to the malicious nature of the file.

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` `9f15a161f3dda74bc207d86977904583b429aeb1f54ad652008b68df0f0d470f`	pdf-javascript-stream	PDF /JS object 8 at offset 0x1E7	2578 bytes
`legacy_pdfkit_stage_000.js` `a2ba9391954c732c136fbaaf81c34803561304c0ecefc190ed17e8ae28614b2c`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0xC2D	2720 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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