PDF malware analysis — malicious · 2e5447a3413c2df3

MALICIOUS

PDF

92.2 KB

MD5: 93f19b3b2a947eb01b5ee81df4a0f357 SHA-1: 97a1f93efb3bc6f5b2df86b1b7e04cf598545de5 SHA-256: 2e5447a3413c2df32f07890ab03f86982694dce77c6ee8095641df133e7eaafe

78 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. The critical CVE_2009_4324 heuristic specifically points to a media.newPlayer exploit. The deobfuscated JavaScript, legacy_pdfkit_stage_000.js, likely attempts to download and execute a secondary payload, which is a common technique for initial access. The obfuscated nature of the script and the use of a known PDF exploit contribute to the assessment.

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` `154c66273ea232401fd906b6f0995f3aba12d533cc91056a56d6895c4e5b87ab`	pdf-javascript-stream	PDF /JS object 8 at offset 0x1E7	2578 bytes
`legacy_pdfkit_stage_000.js` `fbac795adc7cea718b8ae4b1ca8e9752f7cbfedaf4162134e8d0fb8d72150ac6`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0xC2D	2528 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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