Malicious PDF — malware analysis report

Static analysis result for SHA-256 365a482e2ed62d82…

MALICIOUS

PDF

2.7 KB Created: 7517-01-01 Authoring application: 3235
MD5: c8d94978997b1ab9ec30892a242a7620 SHA-1: 750aa47d5602faa499b93f3872fb36548c4180a9 SHA-256: 365a482e2ed62d82941dce5dc1a5fda06976f1ef6d42da17b959a409a1b40f4a
96 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The ClamAV detection 'Pdf.Exploit.Agent-36014' strongly suggests it's a known exploit. The extracted JavaScript file, 'javascript_obj0013_001.js', likely contains obfuscated code designed to exploit a vulnerability within the PDF reader, leading to the execution of malicious code. The exact nature of the exploit and payload is not fully discernible due to obfuscation, but the overall pattern points to a malicious PDF dropper.

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
8442818faedfd80c302745a06344cb909e3158a9d21ff0d0e2e9a074fbc71262
pdf-javascript-stream PDF /JS object 13 at offset 0x328 4785 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).