PDF malware analysis — malicious · c6ea2dd54045abe4

MALICIOUS

PDF

16.3 KB

MD5: d0660ff532d12921897a598e066b2924 SHA-1: be31256039c4f48bc5735ac686a146a78b9d7116 SHA-256: c6ea2dd54045abe492c863d2197b3806bda76422301fd1014ca3d22baf47a15d

118 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript T1204.001 Malicious Link

The PDF contains heavily obfuscated JavaScript, including multiple calls to 'eval()' and 'unescape()'. The critical heuristic 'CVE_2009_4324' indicates the use of a known exploit targeting Adobe Reader's media.newPlayer functionality. This JavaScript is designed to decode and execute a secondary payload, likely for further system compromise.

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` `9591a2bb2ba8fde2e716ad6067a7b5116e0e8f3e861c728510d4a39739bced55`	pdf-javascript-stream	PDF /JS object 111711 at offset 0x18E	2567 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` `5d0570b6ae7ab1fb7929042eb38c43fb6411cea7b12a1a6d897970c8a22a76ac`	pdf-javascript-stream	PDF /JS object 111712 at offset 0xBCB	11319 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_obj111713_002.js` `8e6fa51af05705c6cfcc187d140081ebd63ab8354fa2599154920aa06fb3a4bb`	pdf-javascript-stream	PDF /JS object 111713 at offset 0x3838	2264 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).
`legacy_pdfkit_stage_000.js` `e699a7a210e1b334187e4d672142854ddce15fed36fd3575775717c9a633ab7d`	deobfuscated-js	multi-marker percent-array decoded JavaScript at offset 0xBCB	1084 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` `5091795dc7dfd1e269d30a5ab394f1536cab6157b0cb74b7e26a9fdc9129a46f`	deobfuscated-js	multi-marker percent-array decoded JavaScript at offset 0x3838	165 bytes
`legacy_pdfkit_stage_002.js` `87c70495a3d7411d4dfbd2eefe045b74e48e73c87858685faae8becb611f658e`	deobfuscated-js	multi-marker percent-array combined decoded JavaScript at offset 0xBCB	1250 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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