PDF malware analysis — malicious · 3fcbd6e988183b20

MALICIOUS

PDF

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

MD5: 5cc1293bcf3447abd864f76011f1d076 SHA-1: 7a958517b34f9e59e424ec9eea2287b707d30883 SHA-256: 3fcbd6e988183b20a18c13f6125d41bc6ee346c7dd5a198bee4e5de8fdabc927

98 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1059.007 JavaScript

The PDF file contains embedded JavaScript with multiple obfuscation techniques, including `eval()` and `unescape()` calls. This script is highly likely designed to download and execute a second-stage payload. The heuristics indicate a suspicious extracted artifact and script obfuscation, supporting the malicious intent. Due to the obfuscation, the exact payload and delivery mechanism cannot be definitively determined.

Heuristics 5

eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (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.
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_obj0014_000.js` `7a58e525ca41ade39dab18bf6808bf7f9f9bece70818b88e89e7ef71acf964ae`	pdf-javascript-stream	PDF /JS object 14 at offset 0x38D	66869 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).

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