PDF malware analysis — malicious · f2464aecd9b9740b

MALICIOUS

PDF

20.0 KB

MD5: 0c56a04ce233c3ac854e8794f76ac388 SHA-1: 66e62e90363c83040277bb010c00cb4d7e12a6e7 SHA-256: f2464aecd9b9740b7197e30ca4a26b6f9b8517cef2cb673041df3a08b80aa6a8

118 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF sample contains embedded JavaScript that utilizes eval() and unescape() functions, indicating an attempt to obfuscate and execute malicious code. The critical heuristic firing for CVE-2009-4324 confirms the exploitation of a known vulnerability in Adobe Reader via the media.newPlayer API. The JavaScript is designed to decode and execute a second-stage payload, likely for further system compromise. No specific malware family could be confidently identified.

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` `43effd10478caef879f0d3b5aa026db75fbeb465b8983e31dc1267155c576621`	pdf-javascript-stream	PDF /JS object 111711 at offset 0x18E	2566 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_obj111712_001.js` `1f71d9e0b2f610c5958dc0aabfeeaddcedd10be56a969ed166cdc62f149a6005`	pdf-javascript-stream	PDF /JS object 111712 at offset 0xBCA	14904 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` `78093acf0ae12b3e519550bdb3e7faf730d9ae8d19870f5bdb5a512cf8f9d40c`	pdf-javascript-stream	PDF /JS object 111713 at offset 0x4638	2381 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` `b4db0505387ad754113e3d5926f46348a0c37714878926601c7b0616f8ad98a3`	deobfuscated-js	multi-marker percent-array decoded JavaScript at offset 0xBCA	1089 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` `cd7088aa0ba5ce42db7faac79c4063dccc339c8953139714658e9cb6b07c91fc`	deobfuscated-js	multi-marker percent-array decoded JavaScript at offset 0x4638	165 bytes
`legacy_pdfkit_stage_002.js` `6832b80d3e245b0b258a7b2a8c3d7a83dd7892d2f040ac93500ef425529bacdf`	deobfuscated-js	multi-marker percent-array combined decoded JavaScript at offset 0xBCA	1255 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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