Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca4f5863d228190b…

MALICIOUS

PDF

15.0 KB Created: 2019-04-30 07:56:44 +01:00 Authoring application: mPDF 5.7
MD5: 60c5392e3c3eabe92b96c4cd85fcf5f7 SHA-1: ccef5f9ebb9d2ab04445093939a27a7cefe02ce4 SHA-256: ca4f5863d228190bb989e4dd663be56b3f1d06a4299d9a68d7e24f4914e4a10e
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links to external websites, a technique often used for SEO manipulation or to distribute further malicious content. The ML classifier strongly indicated maliciousness. While no scripts were extracted, the PDF structure and link farm heuristic suggest a delivery mechanism aimed at redirecting the user to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9891

Heuristics 2

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://muicuiu.dumb1.com/2a03a00a08a08a00/Dark-Sunshine-Phantom-Stallion-3-by-Terri-Farley.pdf
    • http://muicuiu.dumb1.com/2a03a01a04a01a03/The-Challenger-Phantom-Stallion-6-by-Terri-Farley.pdf
    • http://muicuiu.dumb1.com/2a03a00a09a02a07/The-Renegade-Phantom-Stallion-4-by-Terri-Farley.pdf
    • http://muicuiu.dumb1.com/4a06a05a05a00a07/Mountain-Mare-Phantom-Stallion-17-by-Terri-Farley.pdf
    • http://muicuiu.dumb1.com/4a06a05a04a03a07/Secret-Star-Phantom-Stallion-19-by-Terri-Farley.pdf
    • http://muicuiu.dumb1.com/4a06a05a04a02a05/Rain-Dance-Phantom-Stallion-12-by-Terri-Farley.pdf
    • http://muicuiu.dumb1.com/4a06a05a04a03a08/Blue-Wings-Phantom-Stallion-20-by-Terri-Farley.pdf
    • http://muicuiu.dumb1.com/1a03a05a07a02a06/The-Black-Stallion-s-Blood-Bay-Colt-The-Black-Stallion-6-by-Walter-Farley.pdf
    • http://muicuiu.dumb1.com/2a04a03a09a05a03/The-Black-Stallion-s-Shadow-Black-Stallion-Returns-1-by-Steven-Farley.pdf
    • http://muicuiu.dumb1.com/2a03a04a06a06a05/The-Black-Stallion-and-the-Girl-The-Black-Stallion-18-by-Walter-Farley.pdf
    • http://muicuiu.dumb1.com/1a03a05a06a07a05/The-Black-Stallion-s-Ghost-The-Black-Stallion-17-by-Walter-Farley.pdf
    • http://muicuiu.dumb1.com/2a03a03a02a09a06/The-Black-Stallion-and-Flame-The-Black-Stallion-15-by-Walter-Farley.pdf
    • http://muicuiu.dumb1.com/2a03a04a03a04a00/The-Black-Stallion-s-Courage-The-Black-Stallion-12-by-Walter-Farley.pdf
    • http://muicuiu.dumb1.com/2a03a06a08a03a03/The-Black-Stallion-Legend-The-Black-Stallion-19-by-Walter-Farley.pdf
    • http://muicuiu.dumb1.com/7a08a02a04a02/The-Black-Stallion-The-Black-Stallion-1-by-Walter-Farley.pdf
    • http://muicuiu.dumb1.com/3a02a01a06a04a02/The-Black-Stallion-and-the-Girl-by-Walter-Farley.pdf
    • http://muicuiu.dumb1.com/1a03a05a05a09a05/The-Horse-Tamer-The-Black-Stallion-14-by-Walter-Farley.pdf
    • http://muicuiu.dumb1.com/4a04a08a08a03/Seven-Tears-Into-the-Sea-by-Terri-Farley.pdf
    • http://muicuiu.dumb1.com/9a06a03a09a01a04/Flucht-in-die-Wildnis-Der-silberne-Hengst-2-by-Terri-Farley.pdf
    • http://muicuiu.dumb1.com/1a00a09a04a03a03/The-Dark-Film-by-Paul-Farley.pdf
    • http://muicuiu.dumb1.com/1a03a05a06a07a05/The-Black-Stalli

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