Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecedad377671cf1f…

MALICIOUS

PDF

14.5 KB Created: 2008-07-26 19:43:58 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)
MD5: 99149d758f9bfe74f98a6fbafaa7ab02 SHA-1: eb215ba4d79db807254ea439d4b8af3abea711d6 SHA-256: ecedad377671cf1fa0b21a4e52f5f4f174f77d3085ddf21a47d54d3491b9f561
118 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript with multiple eval() calls, indicating obfuscated code execution. The ClamAV detection 'Pdf.Exploit.Agent-36118' strongly suggests a known exploit. The JavaScript is designed to execute arbitrary code, likely downloading and running a secondary payload, which is a common technique for malware delivery. The specific exploit and payload are not fully discernible due to obfuscation, hence the 'unknown family' classification.

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.

FilenameKindSourceSize
javascript_obj0013_000.js
501b872226c5337c7a95a1063ed2c87a819c65300431293812c41aac8b1086a0
pdf-javascript-stream PDF /JS object 13 at offset 0x336 13250 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).