PDF malware analysis — malicious · 2fb119733f55e259

MALICIOUS

PDF

3.5 KB Created: 2008-07-23 01:37:50 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: 48c9250107445017201ed0761f7b2c40 SHA-1: ff399b5d9e1353483c31ce66a9d3cbf833eb5d3c SHA-256: 2fb119733f55e259cbbc2a4b8204f48c0d5f40c7b676967bb10dbf56337d03ad

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF document contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The presence of PDF_EVAL and PDF_FROMCHARCODE suggests the JavaScript is obfuscated and likely uses eval() to execute arbitrary code. The extracted artifact 'javascript_obj0012_001.js' further supports this. The script's intent is to download and execute a second-stage payload, which is a common technique for malware delivery. Confidence is moderate due to the lack of specific URL or hash indicators in the provided evidence.

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_obj0012_001.js` `c52fd6cd13af67ba8da654e06e0eaa519626c0c22e3c486eebd16424af7e701b`	pdf-javascript-stream	PDF /JS object 12 at offset 0x3C5	5605 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 2 long base64-like blob(s).

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