PDF malware analysis — malicious · 7abf5cc66a70b4aa

MALICIOUS

PDF

1.4 KB

MD5: 696304772bd9d3cc23a32a833554b3da SHA-1: 53cc836e4f4dadf1fd5053ebd9bd6c893098c0b3 SHA-256: 7abf5cc66a70b4aa6b2773e8a09a6c009a494d490ce9f4749acb9895817f2ef2

136 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution T1059.007 Command and Scripting Interpreter: JavaScript

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. The critical CVE_2009_4324 heuristic firing suggests exploitation of a known vulnerability related to media players. The embedded JavaScript, particularly the use of unescape() and the presence of obfuscated scripts, strongly suggests it's designed to download and execute a secondary payload. The extracted JavaScript files are likely part of this malicious chain.

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)
Suspicious extracted artifact medium 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.
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.

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj111111_000.js` `0478eb5ab16795a4887ee96430aa117410f7adb94acd90de423b4667f9997e31`	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` `00a607d7e2eb4ae2dccd698518c0d036f14c3ae6c008fecf122dedd2d9a6bc43`	pdf-javascript-stream	PDF /JS object 111112 at offset 0x48A	268 bytes

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