PDF malware analysis — malicious · 9dbc2b76b9937d42

MALICIOUS

PDF

2.2 KB

MD5: 538ce9d9debc3975b8405952b779a97e SHA-1: 1d4d818aeedd1fe8676dce03b6f9f6032bc61073 SHA-256: 9dbc2b76b9937d428541ef19ee68f3ec1194ee120433e544e77f9ae4b00a325f

118 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: Malicious JavaScript T1059.001 Command and Scripting Interpreter: PowerShell T1059.003 Command and Scripting Interpreter: Windows Command Shell T1059.007 Command and Scripting Interpreter: JavaScript/TypeScript

The PDF document contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The critical CVE_2009_4324 heuristic firing suggests exploitation of a known vulnerability related to media playback. The presence of eval() calls within the JavaScript further points to obfuscation and dynamic code execution. The extracted JavaScript streams, particularly javascript_obj0005_000.js, are likely responsible for downloading and executing a secondary payload, although the exact nature of the payload is not discernible from the provided evidence. The DOC BODY content is highly obfuscated and does not provide clear user-facing text.

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` `b65e20fd23dd1cd786b21fa8fb260d250ba3ee99e0bee68af3d83660d8b113df`	pdf-javascript-stream	PDF /JS object 5 at offset 0x117	1770 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(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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