PDF malware analysis — malicious · 4e92e77f6e0788ed

MALICIOUS

PDF

10.5 KB Created: 2008-07-26 19:43:58 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: 507f6172511c01c7f5155fc469c12c4b SHA-1: ba93054a0679340fb99b430da8b6e379f3f7ede0 SHA-256: 4e92e77f6e0788ed31a28bbc64da37340c863d4a07f39899f2055418ee26114d

118 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript with multiple obfuscation techniques, including string concatenation and the use of eval(). Heuristics indicate PDF JavaScript actions, embedded JS streams, and eval() calls, strongly suggesting malicious intent. The ClamAV detection 'Pdf.Dropper.Agent-7685783-0' further confirms its malicious nature. The script's complexity and use of eval() point towards it being a downloader for additional malicious content.

Heuristics 5

ClamAV: Pdf.Dropper.Agent-7685783-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7685783-0
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution
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.
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_000.js` `b84490adc004aa1030b55cc30b23fb935ce1e6d965ab53b694fd78bc86386236`	pdf-javascript-stream	PDF /JS object 13 at offset 0x336	9210 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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