PDF malware analysis — malicious · 33bc683a6fb12756

MALICIOUS

PDF

82.1 KB

MD5: efe554f6d080a4633cb5f3a5b816bd93 SHA-1: 005e7e1b4c3425861baf98dc7e6e3e2599df2127 SHA-256: 33bc683a6fb1275626213f4258e95bfc4640e2f163ee27b9f78aa349512ada51

178 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File

The PDF file contains embedded JavaScript and triggers a critical vulnerability (CVE-2009-4324) related to media player functionality. The JavaScript stream is obfuscated, and ClamAV also flagged it as Heuristics.PDF.ObfuscatedNameObject. The primary attack vector appears to be exploiting this PDF vulnerability to run malicious JavaScript, which is a common method for delivering further payloads.

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` `7a6006eebbedaff3c7f85eb814d5e16584adbc70df864d6b8541e2e09bfbae8a`	pdf-javascript-stream	PDF /JS object 6 at offset 0x1C	3016 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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