PDF malware analysis — malicious · cb04b5c374b7423b

MALICIOUS

PDF

1.4 KB

MD5: c6578ccc8f6a2752de63e252f3d9169b SHA-1: 2dc25fa423798294fef7a6cbc87bdfc9eb1b9f8f SHA-256: cb04b5c374b7423b7da31f423c1ee16d3e252fd6b11d40d0d3b62d26561e93ca

118 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File Execution: Malicious File

The PDF file contains embedded JavaScript, triggered by the CVE-2009-4324 vulnerability related to media.newPlayer. The JavaScript is obfuscated, but the presence of unescape() calls and the critical heuristic firing strongly suggest it's designed to execute malicious code. The primary attack vector appears to be exploiting this specific PDF vulnerability to achieve arbitrary code execution.

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` `d2230263a7d315fc2e0c11f628aae0d8892f30b28b87bc3fd79207dac997a8a3`	pdf-javascript-stream	PDF /JS object 111111 at offset 0x160	1261 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` `ee1ccbbcfebfab4e9ecf2b9c5c4d104ee75266a61fc6daf3688832436167030c`	pdf-javascript-stream	PDF /JS object 111112 at offset 0x486	266 bytes

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