PDF malware analysis — malicious · c2707e6d5e409fa0

MALICIOUS

PDF

18.3 KB

MD5: a3e3ad0fe407109a8a79d8ca1784149f SHA-1: 94bacdf42ca182d11b731c60bddd59eb21c853a2 SHA-256: c2707e6d5e409fa0f1fdedcf13737fb8913379ae688b8a8517ab5628ea32f7ab

118 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF sample contains obfuscated JavaScript, including multiple calls to eval() and unescape(). The critical CVE-2009-4324 heuristic indicates the use of a known exploit for Adobe Reader. The deobfuscated JavaScript streams suggest the primary intent is to download and execute a second-stage payload. No specific family could be identified, but the exploit and obfuscation techniques are common in exploit kits.

Heuristics 5

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)
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution
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 6

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj111711_000.js` `cdfd01393c89b3d781e8ce5b0e5eae11e2f929e44e5c05d397e8684448949334`	pdf-javascript-stream	PDF /JS object 111711 at offset 0x18E	3309 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 6 long base64-like blob(s).
`javascript_obj111712_001.js` `b902e6f8fc629fe01c77e125b8cbdf93fe39be130fb4a0a3d3d5ba8bbc27b291`	pdf-javascript-stream	PDF /JS object 111712 at offset 0xEB1	12517 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 5 long base64-like blob(s).
`javascript_obj111713_002.js` `a49ac84a2ac5240e7d82bff6451b98bc2ff0ce450bd830be18e1be8901ad6c0f`	pdf-javascript-stream	PDF /JS object 111713 at offset 0x3FCC	2281 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 4 long base64-like blob(s).
`legacy_pdfkit_stage_000.js` `27920ea41782e3de7681655436ad162917290e5898d36303bc383088d7d66d85`	deobfuscated-js	multi-marker percent-array decoded JavaScript at offset 0xEB1	1075 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` `fa44c3a6a5df9dd0c4918db03b8a33dc1e24bba8204a13d66510a81c2b2e6f17`	deobfuscated-js	multi-marker percent-array decoded JavaScript at offset 0x3FCC	166 bytes
`legacy_pdfkit_stage_002.js` `dacf96b8db35002da82c4833e19470d8c08c84278c5346a5db4e3576531842d5`	deobfuscated-js	multi-marker percent-array combined decoded JavaScript at offset 0xEB1	1242 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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