PDF malware analysis — malicious · a280c87a78e1f106

MALICIOUS

PDF

14.5 KB Created: 2008-07-26 19:43:58 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: 36fc7203e8fe40330d93c003b04a1730 SHA-1: 4b31acdbc2ee5702721bb6346b028d2485fd617d SHA-256: a280c87a78e1f106668165012fe7018706385ba36d4359b77294a769295aa3c6

118 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript with multiple obfuscation layers, including `eval()` calls and string concatenation, which is a common technique for delivering malicious payloads. The ClamAV detection `Pdf.Exploit.Agent-36118` strongly indicates a known exploit. The JavaScript's obfuscated nature and the presence of `eval()` suggest it attempts to download and execute a secondary payload, aligning with typical exploit delivery mechanisms.

Heuristics 5

ClamAV: Pdf.Exploit.Agent-36118 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36118
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution
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_obj0013_000.js` `3868956667cd31220bbfb05c9663bb4cbf2cd443ac166133f7dd3c24cf17b121`	pdf-javascript-stream	PDF /JS object 13 at offset 0x336	13271 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 4 long base64-like blob(s).

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