PDF malware analysis — malicious · 9ce8240a9667ff72

MALICIOUS

PDF

101.3 KB

MD5: e7cf6033a6d8421078e62cd4075c0332 SHA-1: fdd38834d10f2722b269a0d40591b47318b0d390 SHA-256: 9ce8240a9667ff7207d618b0d20cba3c5f81557208667e9c52f73d1a211cdbb4

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript T1204.002 Malicious JavaScript

The PDF file contains embedded JavaScript, which is obfuscated and utilizes an unescape() call. A critical heuristic identified the CVE-2009-4324 vulnerability related to media.newPlayer, indicating an exploit attempt. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload, though its exact function is obscured. The ClamAV detection further supports the malicious nature of the file.

Heuristics 6

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)
ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION

ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0006_000.js` `24cf1818d81490ebcd89021e4cab396bbae4a82600b28f8e9dabdabdccdd3212`	pdf-javascript-stream	PDF /JS object 6 at offset 0xC0	3069 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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