PDF malware analysis — malicious · e4ff5a86b695150d

MALICIOUS

PDF

1.4 KB

MD5: f768d26f9b713d8d0c54fd32a658b07e SHA-1: 376e2d5ef56d8b976df2789984a2fcdef2555cc1 SHA-256: e4ff5a86b695150d8252032fd3529d5c1f10304da3b6d627775a7f19fa8f1202

118 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript that leverages the CVE-2009-4324 vulnerability via the media.newPlayer object. This vulnerability allows for the execution of arbitrary code. The embedded JavaScript is obfuscated, but the heuristic firings indicate it is designed to exploit this specific flaw. The primary goal appears to be the execution of malicious code through a known PDF reader exploit.

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` `5382e96e5a3a7c4518d32f96988a457bfdfa801203774a475262d610712efdc3`	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` `152720a998fbbb7be2590651cb3b29e614e045994200f6d995234405531a9f18`	pdf-javascript-stream	PDF /JS object 111112 at offset 0x489	269 bytes

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