PDF malware analysis — malicious · 2c3eb89a2ea57803

MALICIOUS

PDF

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

MD5: c98089d383aa79cde2a46ef39d664553 SHA-1: 00a071af3b102716f24bdb63236059ab89d7a2b4 SHA-256: 2c3eb89a2ea57803c350f836cc2622184d21dbcf0925eb6646c830d282e2dc6c

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The PDF_EVAL and PDF_FROMCHARCODE firings suggest that the JavaScript is obfuscated and uses eval() and String.fromCharCode() to dynamically construct and execute code. This obfuscated script, named 'javascript_obj0013_001.js', is likely responsible for downloading and executing a second-stage payload. Due to the obfuscation, the exact nature of the payload and its ultimate destination could not be determined.

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` `dd2d561d71f96e52dbd8cadbb0c3d520df297ccbd94b05814f3b3c1c9387be79`	pdf-javascript-stream	PDF /JS object 13 at offset 0x3D2	12524 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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