PDF malware analysis — malicious · 3458f56e4e973e34

MALICIOUS

PDF

17.0 KB

MD5: 10e462a046e96a7d2c38133f85c08fe4 SHA-1: 4f845ff39bdeeea7add6f1c013c49df5479bc0d5 SHA-256: 3458f56e4e973e344254aac9ad5dbfad7aecc6290e56efcf2aa880b0e41a40f4

118 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF sample contains heavily obfuscated JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT, PDF_JS, PDF_EVAL, and a critical CVE_2009_4324 alert. The JavaScript uses eval() and unescape() functions, common in exploit kits, to decode and execute a secondary payload. The obfuscation suggests an attempt to evade detection and deliver a malicious payload, likely an exploit or downloader.

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` `1d4e516850c07104ae1af3e6b52c0b4ac0eda11fcabfad381accc3dc74d59962`	pdf-javascript-stream	PDF /JS object 111711 at offset 0x18E	3347 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).
`javascript_obj111712_001.js` `6acda4589c33b325a31280bedf51d8768046aad035db917fa22c888eaaee4060`	pdf-javascript-stream	PDF /JS object 111712 at offset 0xED7	11228 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` `a8fa5c9414549522e6590a7e58613eb689fd42e13fc5f8aac3ecae533ea0f972`	pdf-javascript-stream	PDF /JS object 111713 at offset 0x3AE9	2225 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` `00f3e0466733220cf747b75dd7148845fbda7ee08125429e7cde5d896931f92e`	deobfuscated-js	multi-marker percent-array decoded JavaScript at offset 0xED7	1083 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 0x3AE9	166 bytes
`legacy_pdfkit_stage_002.js` `82e7e6ede382a5c587b7e85a740ef409473057935aded1f9710271349356a05d`	deobfuscated-js	multi-marker percent-array combined decoded JavaScript at offset 0xED7	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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