PDF malware analysis — malicious · a02ff9b8d63630f5

MALICIOUS

PDF

3.7 KB Created: 2008-09-24 19:47:56 Authoring application: Adobe (via Notepad)

MD5: 4dac586d3eb61cc437ea575fca06bc91 SHA-1: 8a6aff868173a008fa8446825a502749c731998d SHA-256: a02ff9b8d63630f587acf01dd64ef4129bce247d31f4960c05e631438230a434

158 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1059.007 JavaScript

The PDF contains embedded JavaScript, including calls to eval() and unescape(), which are commonly used to obfuscate malicious code. The ClamAV detection 'Pdf.Exploit.Agent-35931' strongly indicates a known exploit. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload, contributing to the malicious nature of this document.

Heuristics 6

ClamAV: Pdf.Exploit.Agent-35931 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-35931
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
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` `cfa7b6dc4ecfe90486d30db49b08f99131d876e7c717fcfa6b1c1c48542fbba0`	pdf-javascript-stream	PDF /JS object 6 at offset 0xBC9	268 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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