PDF malware analysis — malicious · 850070e166f04dce

MALICIOUS

PDF

1.4 KB

MD5: e8a93844d1f25ed5f98ba93d49f5ee60 SHA-1: 633d9942024bfe4022d199a3810e0d002b175aa8 SHA-256: 850070e166f04dce847b07d9f1fcf98ff9782ba8ab0260f8072ff29802212d92

118 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

This PDF file contains embedded JavaScript that leverages the CVE-2009-4324 vulnerability, specifically targeting the media.newPlayer object. The JavaScript is obfuscated and uses unescape() for decoding, indicating an attempt to hide malicious actions. The primary goal appears to be the execution of arbitrary code via this exploit, likely leading to a further stage of infection.

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` `a4c0df7842b0a6a651226519293ad8b4b1a9d330fc1101066c5f4f68f0d42b56`	pdf-javascript-stream	PDF /JS object 111111 at offset 0x160	1258 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` `2e73ab03b3a9c145da2cb7bc4436cb39d6de6630a6d778d6a7a86b070fa72382`	pdf-javascript-stream	PDF /JS object 111112 at offset 0x489	244 bytes

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