PDF malware analysis — malicious · 4e240f339219ffb9

MALICIOUS

PDF

1.4 KB

MD5: ba3467dd82e718514c9c1436b91a2674 SHA-1: d75935a1da4527f4544c8fed9570c79af533770c SHA-256: 4e240f339219ffb9aa23fb8c89a41b0ba3003f8948823b4014275356b08c6681

118 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution: Malicious File T1059.001 Command and Scripting Interpreter: PowerShell

This PDF document contains embedded JavaScript, which is triggered by the CVE-2009-4324 vulnerability related to media player handling. The JavaScript is obfuscated and likely intended to download and execute a second-stage payload. The presence of multiple JavaScript streams and the unescape() function further indicate malicious intent.

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` `7e45a87c43b6176cf5c3d83ea2b68f5b3cafac57d6507b96027845c36f2e4f2c`	pdf-javascript-stream	PDF /JS object 111111 at offset 0x160	1255 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` `4c5478a8e002eeebf1218e7bdc768db662a8e7679f13d4cf9b26f6dc8415272a`	pdf-javascript-stream	PDF /JS object 111112 at offset 0x486	252 bytes

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