PDF malware analysis — malicious · 42549d996f22fb55

MALICIOUS

PDF

2.2 KB

MD5: 7b51ac0de13006b5ca7f1c94bc4baffd SHA-1: f826cd2cc18842339d6e245dd38d1ace80804aa6 SHA-256: 42549d996f22fb552a5fe8bcae2f1c746bf256ba63f01f8d2af2d466080f27b9

118 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: Malicious File T1071.001 Web Protocols: Web Protocols

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The presence of an eval() call and a specific exploit for CVE-2009-4324 (media.newPlayer) strongly suggests that the embedded JavaScript is intended to be executed to exploit this vulnerability. The extracted JavaScript files, particularly the larger one, likely contain code to download and execute a secondary payload. The confidence is high due to the clear exploit indicators.

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.
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0005_000.js` `0c60783857aa9013cfdf6ccd9a63f3aa631eca981f42f2d627904bdef46fdbc2`	pdf-javascript-stream	PDF /JS object 5 at offset 0x117	1674 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
`javascript_obj0005_001.js` `a4a39a95112adeb7becbe348ae769bf8a4316eb18c0ca19b042a5144275ca0a0`	pdf-javascript-stream	PDF /JS object 5 at offset 0x117	42 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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