PDF malware analysis — malicious · cfe11c5e75ca0eec

MALICIOUS

PDF

3.5 KB Created: 2008-31-20 53:85:00 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: 87e4d3bc0e44be8558c589dbc2568400 SHA-1: 5a2f83bb68d03d56f9b3f72a7d66047177b8b0dc SHA-256: cfe11c5e75ca0eeccf18106fade92e1e1d6f62b65bfef35d3e655eddce06fa1b

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1059.007 JavaScript

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The presence of an eval() call and String.fromCharCode within the decoded stream suggests obfuscated code execution. The extracted artifact 'javascript_obj0013_001.js' likely contains the malicious payload. The exact intent of the script is difficult to determine due to obfuscation, but it is designed to execute arbitrary code.

Heuristics 5

eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (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.
String.fromCharCode low PDF_FROMCHARCODE

String.fromCharCode found — used to construct payload strings dynamically. Common in benign JavaScript libraries for codepoint manipulation, so this alone is informational; weaponised use is also caught by the dedicated fromCharCode-stage and exploit-shape rules. (matched inside decoded stream)
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_001.js` `606d51756aabf5f1d98f34651c76117cb6a46fe3b936db9055c8f4d696379736`	pdf-javascript-stream	PDF /JS object 13 at offset 0x3D2	8839 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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