PDF malware analysis — malicious · c737549b56c18199

MALICIOUS

PDF

1.4 KB

MD5: 734633f26bdee0c6a8e7bcccab91c9ed SHA-1: 7aa80eea6b90dd5293970c8dac09d6c9f73c4e95 SHA-256: c737549b56c181995081ed9dbe2a36d92c25e279f7d15142110acbdca57fc8ae

118 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution T1059.001 Command and Scripting Interpreter: JavaScript T1566.001 Phishing: Spearphishing Attachment

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. The critical CVE_2009_4324 heuristic suggests exploitation of a vulnerability related to media player functionality. The embedded JavaScript is likely responsible for executing the exploit, potentially leading to further malicious activity. No specific malware family could be identified.

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` `7e857f4bf581157628f7142a817d4dd8e63dccfdc79a43fc204bd15bb960ad8f`	pdf-javascript-stream	PDF /JS object 111111 at offset 0x160	1262 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` `f43d78a11560b46e47ba0265faea8c5d62170df8613f5e9f81c58a3793d9fcba`	pdf-javascript-stream	PDF /JS object 111112 at offset 0x489	255 bytes

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