Malicious PDF — malware analysis report

Static analysis result for SHA-256 c10c54ec6089119f…

MALICIOUS

PDF

2.7 KB Created: 7471-01-01 Authoring application: 120
MD5: 9878ccbf6df971c5afb49cd026660f94 SHA-1: 9fda2502bdb1ca08c7882f8949dcb9bc7c01109a SHA-256: c10c54ec6089119f8baa48f88e96ddc49afb0e78db18c9fc6ccc433477f489f6
96 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The ClamAV detection 'Pdf.Exploit.Agent-36014' strongly suggests a known exploit. The extracted JavaScript file shows obfuscation indicators, typical of malware attempting to hide its malicious actions. The primary function of the script is likely to download and execute a second-stage payload, although the exact mechanism is obscured.

Heuristics 4

  • ClamAV: Pdf.Exploit.Agent-36014 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36014
  • Suspicious extracted artifact medium 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.
  • 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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0013_001.js
48c6822dd581e57978f5e7e1ab1e1e9da5741e7e88846b1ab46ea4882321bd75
pdf-javascript-stream PDF /JS object 13 at offset 0x328 4801 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 10 eval/decoder/string-building token(s). Carved artifact contains 3 long hex-escaped blob(s).