PDF malware analysis — malicious · d59aee48ee521d3a

MALICIOUS

PDF

1.9 KB

MD5: 3dea9dde902a76aeef27554d4bfca930 SHA-1: 74707ea20774f4d36b1ccafdcccffdbcb5d9fc79 SHA-256: d59aee48ee521d3adde31cc116dafa7f3ed5a93e0f9373c4bf9bbd46e7f4c358

118 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File Execution: Malicious File

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The critical CVE_2009_4324 heuristic firing suggests exploitation of a vulnerability related to media player functionality. The PDF_UNESCAPE heuristic indicates obfuscation techniques were used within the JavaScript. The embedded JavaScript likely serves to download and execute a secondary payload, a common technique for initial access.

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.
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0005_000.js` `f85abd917b8d87db1e07c51cb37757e12ef10bf144156f3c99cf49fa9ba18bcd`	pdf-javascript-stream	PDF /JS object 5 at offset 0x117	1443 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).
`javascript_obj0005_001.js` `8b5466f6a3036359a7979460a009ac6a20c1c1afcdb86d79a4e833c0ba053294`	pdf-javascript-stream	PDF /JS object 5 at offset 0x117	38 bytes

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