PDF malware analysis — malicious · dbe9509a40b101dd

MALICIOUS

PDF

2.8 KB

MD5: c8bab69e2f6763b83f84cccabb815b9e SHA-1: ad1685d8b9ea842fb13a5b2588b225d7cb72b195 SHA-256: dbe9509a40b101ddad365fdf8d7d7fba17f3a09d2417db9cd8eee21c38038f71

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript T1204.002 Malicious JavaScript

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. A critical heuristic identified the CVE-2009-4324 vulnerability related to media.newPlayer, suggesting the JavaScript is designed to exploit this flaw. The JavaScript stream itself is obfuscated, as noted by PDF_UNESCAPE and ClamAV's detection of Heuristics.PDF.ObfuscatedNameObject. The primary intent appears to be exploiting this CVE to execute arbitrary code.

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` `4c1d12518322717cdc9161bcd7323658dd8e03445e94b99a1e256ac54babfc7d`	pdf-javascript-stream	PDF /JS object 6 at offset 0x1A3	1744 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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