PDF malware analysis — malicious · 3fd8433796cdaa43

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: 46ac95ef83170d2bbbcbfdabca281724 SHA-1: de8952517a5e4e0d30b38ed7df30b55667c98641 SHA-256: 3fd8433796cdaa43916e1a0330dd9c6d21e0006b6f6a2dd570e2ca21350f5a44

118 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript with multiple obfuscation layers, including the use of `eval()` and string concatenation. The heuristic `PDF_EVAL` and `PDF_JAVASCRIPT` firings indicate the presence of executable code. ClamAV detection as `Pdf.Exploit.Agent-36118` strongly suggests a known exploit. The script's intent is to download and execute a secondary payload, as indicated by the obfuscated code and the `eval` calls.

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` `e90145014767d42acc62d9a1c9dd796f72e8cc57c76bac0990cd412acd5d763e`	pdf-javascript-stream	PDF /JS object 13 at offset 0x336	13330 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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