Pdf.Dropper.Agent-7001939-0 — PDF malware analysis

Static analysis result for SHA-256 851d1e02b134b222…

MALICIOUS

PDF

6.3 KB Created: 2017-06-08 16:14:34 +02:00
MD5: 13486b57cc3ad49227174f86fd4df606 SHA-1: 6e42b5372e017f45e6afbeee02bd55dd856c3f21 SHA-256: 851d1e02b134b222d0e4012c2bbb61828f1219c66ec5ed9ca291c406cb83461f
126 Risk Score

Malware Insights

Pdf.Dropper.Agent-7001939-0 · confidence 95%

MITRE ATT&CK
T1059.007 JavaScript T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, identified as a malicious dropper by ClamAV. This script is likely responsible for downloading and executing a second-stage payload from the embedded URL. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9305

Heuristics 5

  • ClamAV: Pdf.Dropper.Agent-7001939-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7001939-0
  • 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. (matched inside decoded stream)
  • 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. (matched inside decoded stream)
  • Embedded file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload (matched inside decoded stream)
  • 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 https://github.com/mattias-ohlsson/eicar-standard-antivirus-test-files
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/xap/1.0/
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/pdf/1.3/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000003a1.js
977d78c88d259a1174dec0def9ff32742a9809da22c76cc791d5c78e80795e15		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3A1 1614 bytes

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