Malicious PDF — malware analysis report

Static analysis result for SHA-256 3151d1cc4d107346…

MALICIOUS

PDF

14.0 KB
MD5: 6d772bdc648e29ae472092af4dd26597 SHA-1: ca47f2a99af2d4987c9331dcdcea59097c554c84 SHA-256: 3151d1cc4d1073460437cd54b859f35441d39ef35ed8b2bdbfd3d955434bf9c6
108 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript, which is a common technique for delivering malicious content. The JavaScript is obfuscated but appears to be designed to execute and likely download a second-stage payload from the provided URL. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • ClamAV: Pdf.Dropper.Agent-7246146-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7246146-0
  • 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.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://www2.firstdefensecoj.rr.nu/?rvy4qbyk=ltnmmK7H8dCM3tvXsZmVl5uU59nPrM2jpq5lo5qvzJnOmOfnoZaZlqaql5akoqqc5aeulK2cjMrU1eaht7qwlOPOx6ydmOmd

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0005_000.js
a212dc8692bfed90e18473f2d80e4faa40098f03d2a1ae3ca2dfd3bc7e734325
pdf-javascript-stream PDF /JS object 5 at offset 0x1A8 13615 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).