PDF malware analysis — malicious · 9683ca7a17b7f7d0

MALICIOUS

PDF

2.5 KB

MD5: 9a43b2e273b2affabc28ce679a0968d5 SHA-1: a62986ef972a9ca566d1ba005588c214d8c32631 SHA-256: 9683ca7a17b7f7d0db9ef39109366346690496f7b79810f97674be1a3bf630d3

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link T1204.002 Malicious File

This PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The unescape() function and the CVE-2009-4324 exploit (media.newPlayer) suggest the JavaScript is obfuscated and designed to trigger a vulnerability. The ClamAV detection further confirms its malicious nature. The embedded JavaScript is likely responsible for downloading and executing a secondary payload, a common technique for initial access.

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` `104bf9cbd983275ca702efa4c12716a3b4b7314a29c64602ccfba17f9021eb9d`	pdf-javascript-stream	PDF /JS object 6 at offset 0x19B	1573 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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