PDF malware analysis — malicious · 4ee99b83be8832b7

MALICIOUS

PDF

2.8 KB

MD5: 3af44979bed77af4790a96fc46ff1f04 SHA-1: 80e23a10a3359c864c20e630f71300387dc85790 SHA-256: 4ee99b83be8832b74a6072a4e5de357c7a4c09d9f0025b54f46b00254ece9e0a

216 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The critical CVE_2009_4324 heuristic suggests exploitation of a media player vulnerability. The embedded JavaScript stream, named 'javascript_obj0006_000.js', is likely responsible for executing the malicious payload. The unescape() call and ClamAV detection further confirm the malicious nature of the file, pointing towards a downloader or exploit delivery mechanism.

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)
Suspicious extracted artifact high 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.
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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0006_000.js` `ffb516fb0ceb69ccbab8bfa4a26ad2183cedac24aa0ab79fed49847eaafbd04c`	pdf-javascript-stream	PDF /JS object 6 at offset 0x19D	1793 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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