PDF malware analysis — malicious · 1d4ea2d82d024f37

MALICIOUS

PDF

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

MD5: ee88735c57e9be2c57a03658ca703405 SHA-1: 903756b0c0e7f4389304cd6c1c7f615ca89c837d SHA-256: 1d4ea2d82d024f3737a660b5faa41b24f91033bf004ed217c67056aa630b6e2c

148 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 and ClamAV detection strongly suggest malicious intent. The JavaScript uses eval() to execute further code, and a reconstructed string from the script is 'Math.Util.in(ITK46Yns,VlMwkLuxZTM3T4lSR[eJVeXsx33i30f[charCodAat'](z3v7q91BFsZOS++OizOSK9GEgyI156^ljpeasZgi&255LLkotXh5bTQX'. This pattern suggests the script is designed to download and execute a second-stage payload.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

ClamAV: Pdf.Exploit.Agent-36118 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36118
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` `a3923a6a15191ee4d155fe46b72258b3d906373bd309558dbf3bf417baee27d4`	pdf-javascript-stream	PDF /JS object 13 at offset 0x336	13521 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 2 long base64-like blob(s).

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