PDF malware analysis — malicious · e822f320bd314403

MALICIOUS

PDF

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

MD5: af11ea81d86ceac4d79f7364c91d1d71 SHA-1: cec0abad189d6c58a8f060e0e454d535b72243e1 SHA-256: e822f320bd314403000aea7f179b790c47ace6147dacde5727e0962cc7f79c5d

88 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF contains obfuscated JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT, PDF_JS, and PDF_EVAL. The ML classifier strongly flags this PDF as malicious. The JavaScript appears to use eval() to execute further code, and the presence of a long encoded blob within the extracted artifact suggests it's designed to download and execute a second-stage payload. The document body itself contains heavily obfuscated JavaScript code that attempts to reconstruct and execute commands using Math.fromCharCode and eval.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

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` `7084b90ed92547d976140b9f70150b5e437296914ef717c5a095cdd8e3b5e469`	pdf-javascript-stream	PDF /JS object 13 at offset 0x336	9745 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 10 long base64-like blob(s).

Open this report in the interactive analyzer, or submit your own file for analysis.