PDF malware analysis — malicious · d6c7f30577c5164c

MALICIOUS

PDF

3.2 KB Created: 2008-10-23 21:05:02 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: 75071982e5d8c45bd96ad32e3c9da140 SHA-1: dcf196c03c91e83b2837c48a49b2dde0b488706e SHA-256: d6c7f30577c5164cc3bf5f88e2fd8f04fb14bf0890e8ad0a5c0c908f75caa288

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1059.007 JavaScript

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including 'PDF_JAVASCRIPT', 'PDF_JS', and 'PDF_EVAL'. The 'PDF_EVAL' firing specifically points to the use of eval(), a common technique for executing obfuscated code. The presence of 'String.fromCharCode' further suggests code construction within the script. The extracted artifacts 'javascript_obj0013_000.js' and 'deobfuscated.js' confirm the JavaScript content. The overall pattern suggests the JavaScript is designed to download and execute a secondary payload, a common attack vector for malicious PDFs.

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` `7b9026596f8ee0e76e68a7814e82c5b9e1406b0e5c48e580bd631f5e90facb01`	pdf-javascript-stream	PDF /JS object 13 at offset 0x3CE	5449 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` `aff3f0f11726356797f65d19c2a7dab175d788b6dc6f7a9b7baeeea4641fe669`	deobfuscated-js	PDF JavaScript deobfuscation pass	11614 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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