PDF malware analysis — malicious · 2493f793a502ce80

MALICIOUS

PDF

17.8 KB

MD5: afee67c9f8b82995d5612d6278a1a6ba SHA-1: fbb6048542210813ddeb3370d1b010789b12f192 SHA-256: 2493f793a502ce80abc6e53ed9d86bee4a04f4bf9e0b6beacf1ef5e8ca006a62

118 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF document contains obfuscated JavaScript, identified by heuristics related to PDF JavaScript actions and eval() calls. The critical CVE-2009-4324 heuristic indicates a known exploit for PDF viewers. The embedded JavaScript uses eval() and unescape() functions, common in exploit kits for deobfuscating and executing malicious code. The primary function of the script appears to be downloading and executing a second-stage payload, though the exact URL or payload is heavily obfuscated and not directly recoverable from the provided evidence.

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` `66efb0378a451c9b64c6b5457ea81aeaed006743c37097d7e4e5910cf0972293`	pdf-javascript-stream	PDF /JS object 111711 at offset 0x18E	3333 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` `166001d637874087514f5188dfbfe52e9907345e3f296cfe84a48eb41387173d`	pdf-javascript-stream	PDF /JS object 111712 at offset 0xEC9	11714 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` `6abced0f0f9b00621179b78e30f4778671a324ee37bf0de293da3b4c196c34b4`	pdf-javascript-stream	PDF /JS object 111713 at offset 0x3CC1	2561 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` `566360516d49c269f778c705ecc65c605c34e0c677ccbe3bc29e8f124f20a3d0`	deobfuscated-js	multi-marker percent-array decoded JavaScript at offset 0xEC9	1088 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 0x3CC1	166 bytes
`legacy_pdfkit_stage_002.js` `af88c76151b262a1abecdd09c7b6eb8f9833c14bf5e434b5127840984ebf7e5b`	deobfuscated-js	multi-marker percent-array combined decoded JavaScript at offset 0xEC9	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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