PDF malware analysis — malicious · 91367fcc2824ef20

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: 219b0b6e246d6d834a0656fc621c74e6 SHA-1: 746267c8b1b0924d23a571080ef9e3eeaf6dae54 SHA-256: 91367fcc2824ef20db72128fa6ab21424f1354f260ba5ace932d7efb9a6f0cfe

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The presence of a PDF_EVAL heuristic firing suggests the script attempts to execute arbitrary code, likely using eval(). The PDF_FROMCHARCODE heuristic further points to obfuscation techniques commonly used to hide malicious payloads. No specific URLs or network indicators were extracted, but the script's nature points to a downloader or exploit execution.

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` `4feaf4b82f2a835a135f77ba26759aac768f34ca0d9b846f2b59fe4498e35b75`	pdf-javascript-stream	PDF /JS object 13 at offset 0x3D2	12690 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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