PDF malware analysis — malicious · 7ee2845a9d5ee269

MALICIOUS

PDF

206.8 KB

MD5: b73e2a2b1eb65b9deb7cc0d0c4135237 SHA-1: 72b7f58de0ce4e96c68a5eafac598390938c1e2f SHA-256: 7ee2845a9d5ee2694e5232b14a716dd750e8c8fa32f43bc9ddfac84278a83a1c

78 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. A critical heuristic identified the CVE-2009-4324 vulnerability related to media.newPlayer, suggesting an exploit is present. The deobfuscated JavaScript, specifically legacy_pdfkit_stage_000.js, likely attempts to download and execute a secondary payload, as is common with this exploit.

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` `4e7212ecc1fee9ab94d71a0537fe406aafb3b18353c6089c9db45565b6efb284`	pdf-javascript-stream	PDF /JS object 8 at offset 0x1E7	2780 bytes
`legacy_pdfkit_stage_000.js` `6a02ce38648d1d9675af932b0a93a7fcc649c7d16a524290c226457c5fdef854`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0xCF7	2570 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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