PDF malware analysis — malicious · 7db578a456c7e729

MALICIOUS

PDF

3.1 KB Created: 2009-05-31 15:33:12 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: 6a1ed7e57f70dbc55148590eab264c7d SHA-1: cd39acf15d79393a027d7042228deb664465ecf9 SHA-256: 7db578a456c7e729d9ea6625ae455dc685aeb0a372225cb17583d2650deeeff2

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. The presence of an eval() call and String.fromCharCode suggests the JavaScript is obfuscated and designed to execute arbitrary code. The deobfuscated.js artifact further supports the analysis of malicious JavaScript content. The primary attack pattern involves leveraging these JavaScript capabilities to achieve a malicious outcome, such as downloading a second-stage payload or exploiting vulnerabilities.

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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0013_000.js` `d64065d52c0e59f70e8798df6a063f7d3213f7953eef6b4ae14f37580f9a3dc3`	pdf-javascript-stream	PDF /JS object 13 at offset 0x3CE	4835 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
`deobfuscated.js` `468d1a1e60b70cc0fd83fa8519aff66b5b7e56edc433c5377268036f4e8a65c9`	deobfuscated-js	PDF JavaScript deobfuscation pass	11159 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s). Carved artifact contains 2 long base64-like blob(s).

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