Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3f56dbceee7402b…

MALICIOUS

PDF

4.1 KB Created: 2008-09-07 22:47:39 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12; modified using iText 2.1.7 by 1T3XT)
MD5: 457518196e63217c21d9fe6fb02d810c SHA-1: aa1e8f7ecf95db3c024b830a33ea5e227378c0cf SHA-256: d3f56dbceee7402b296b5bebd82be612948dc03ca6261e3b3e0080491fb28c4a
118 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 JavaScript/JScript T1059.007 JavaScript/JScript

The PDF file contains embedded JavaScript with obfuscated code, indicated by multiple heuristic firings including PDF_JAVASCRIPT, PDF_JS, and PDF_EVAL. The ClamAV detection 'Pdf.Dropper.Agent-7308248-0' strongly suggests its malicious nature as a dropper. The obfuscated JavaScript is designed to execute arbitrary code, likely to download and run a second-stage payload.

Heuristics 5

  • ClamAV: Pdf.Dropper.Agent-7308248-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7308248-0
  • 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.

FilenameKindSourceSize
javascript_obj0013_001.js
dce4c21bd85c4483ea395605d711d5753c18eb5511d7be9b16f3e5275320878d		 pdf-javascript-stream PDF /JS object 13 at offset 0x352 2591 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 eval/decoder/string-building token(s).

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