PDF malware analysis — malicious · 8015c32be36fbb26

MALICIOUS

PDF

7.2 KB Created: 2009-12-17 16:59:10 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: a1a5bfd5fc74e9bf8dfa196193130c1d SHA-1: 1cffef9e113cb7bcd3a772f29d0e4ddf20d156b2 SHA-256: 8015c32be36fbb26b35601e055ae120c6020b753933ae4301fa7570a329f3d74

268 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF file contains embedded JavaScript that leverages the CVE-2009-4324 vulnerability by calling media.newPlayer. This exploit is designed to execute arbitrary code, and the presence of obfuscated JavaScript and exploit cluster heuristics strongly indicates malicious intent. The script attempts to download and execute a secondary payload, which is a common technique for malware delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 7

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)
PDF JavaScript exploit cluster critical PDF_JS_EXPLOIT_CLUSTER

PDF combines an executable JavaScript/action surface with exploit staging indicators such as eval/unescape/fromCharCode, XFA script content, or a related CVE pattern. Benign form JavaScript remains low-severity, but this correlated cluster is high-confidence malicious behavior.
ClamAV: Pdf.Exploit.Agent-23931 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-23931
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_obj0021_000.js` `12e1eda72dc453d8d3eb5de9aa6e422b2253939452258b38147d41992e17768a`	pdf-javascript-stream	PDF /JS object 21 at offset 0x1883	363 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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