PDF malware analysis — malicious · dbb495caa8ace12c

MALICIOUS

PDF

1.4 KB

MD5: 9dabd02d16795c9cdbd528670b7e9ede SHA-1: fc771afe8889f977f8a9259f752b9b9c6de9cf40 SHA-256: dbb495caa8ace12c5cc77186df73e45f0f6841245e2372b2506bdb5bb260dc62

118 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.001 JavaScript T1559.002 Component Object Model

The PDF file contains embedded JavaScript and triggers a critical heuristic for CVE-2009-4324, indicating exploitation of a media player vulnerability. The embedded JavaScript, although not fully detailed here, is likely used to download and execute a secondary payload. The presence of multiple JavaScript streams and the unescape() call suggest obfuscation techniques are employed to hide the malicious activity.

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. (matched in decompressed stream)
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
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_obj111111_000.js` `aadb67821a0b0f1884e4e7d0c24c889a3a8f1133b512d7eda00a9992688bbe97`	pdf-javascript-stream	PDF /JS object 111111 at offset 0x160	1263 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
`javascript_obj111112_001.js` `172747e2133d88d494daf04b2da32ecb9503273f528d8e3efbc2ff051e774cb1`	pdf-javascript-stream	PDF /JS object 111112 at offset 0x48A	261 bytes

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