PDF malware analysis — malicious · 43aa03cca5174ce0

MALICIOUS

PDF

46.2 KB

MD5: c60754e8b5a7b0cb272fd983bfe38de4 SHA-1: 1cbe3ab184b429def35314c16847b57bee60ac2f SHA-256: 43aa03cca5174ce056c5dc85ce7d5318335cef508dc19df38423ac0840cbdaa4

78 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript T1204.002 Malicious File

The PDF file contains embedded JavaScript and triggers a critical heuristic for CVE-2009-4324 (media.newPlayer vulnerability). The embedded JavaScript, although obfuscated, is indicative of a downloader or exploit loader. The primary attack vector appears to be the exploitation of this known PDF vulnerability to gain code execution.

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` `08457f91af486e79be13d0183f5233d98b60d2de6d08b472ab094a6de26f0fec`	pdf-javascript-stream	PDF /JS object 8 at offset 0x1E7	2578 bytes
`legacy_pdfkit_stage_000.js` `d7155f873b59e589a73c704be477a30cf4921d43cb2c81abc4b0960cad6f3280`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0xC2D	1220 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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