PDF malware analysis — malicious · d4044dd056147ae3

MALICIOUS

PDF

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

MD5: 3a1048dcfcc23b893c000f2ee93de285 SHA-1: 774364491a6fb8585c20081426ffae028160aa3c SHA-256: d4044dd056147ae33fa5dc79677607b1729b40abf013a0db4ecba180835b81d8

118 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains obfuscated JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT, PDF_JS, and PDF_EVAL. The ClamAV detection 'Pdf.Exploit.Agent-36118' strongly suggests a known exploit. The JavaScript uses eval() to execute code, and the reconstructed string 'Math.random().toString(36).substring(2,15)' is used within the eval call, likely to deobfuscate or generate malicious code. The primary intent appears to be downloading and executing a secondary payload, typical of exploit-laden PDFs.

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` `e0e9833ecc88769a48a2df3700f990ac135c47f7c0d19f3d6c4885d0df514fe6`	pdf-javascript-stream	PDF /JS object 13 at offset 0x336	13412 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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