Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7ac82de6b3b6068…

MALICIOUS

PDF

19.0 KB Created: 2019-05-02 01:33:30 +01:00 Authoring application: mPDF 5.7
MD5: 18c22ffcf5dc508890582d199aa68e05 SHA-1: 55b16f1885d6529794bb0b211d903aec61c8be7d SHA-256: d7ac82de6b3b6068df612af4520f485cab3a615defeef626b0c87c550609ad0c
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged this PDF as malicious. While the document body is heavily obfuscated, the presence of numerous links suggests a malicious intent, possibly to redirect users to phishing sites or to distribute further malware. The primary attack pattern observed is the creation of a link farm within the PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9775

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/4a06a07a02a08a01/Journey-to-Chernobyl-Encounters-in-a-Radioactive-Zone-by-Glenn-Alan-Cheney.pdf
    • http://muicuiu.dumb1.com/8a04a03a03a02/Thanksgiving-The-Pilgrims-First-Year-in-America-by-Glenn-Alan-Cheney.pdf
    • http://muicuiu.dumb1.com/4a03a07a05a03a04/Safe-Journey-An-African-Adventure-by-Glenn-L-Pace.pdf
    • http://muicuiu.dumb1.com/7a01a09a05a05a09/Combat-Zone-Wrestling-Czw-Cage-of-Death-Combat-Zone-Wrestling-Championships-Combat-Zone-Wrestling-Shows-List-of-Czw-World-Tag-Team-Champi-by-Source-Wikipedia.pdf
    • http://muicuiu.dumb1.com/1a01a08a03a03a02a09/Encounters-with-Fire-Encounters-with-People-by-Shiho-Kanzaki.pdf
    • http://muicuiu.dumb1.com/2a07a01a02a00a00/Gabby-a-Mythical-Journey-by-Alan-Stephenson.pdf
    • http://muicuiu.dumb1.com/2a05a03a02a02a06/Glenn-Hates-Books-Vol-1-Brutally-Honest-Book-Reviews-by-Glenn-Conley.pdf
    • http://muicuiu.dumb1.com/4a05a02a08a05a04/Chernobyl-by-Frederik-Pohl.pdf
    • http://muicuiu.dumb1.com/4a04a08a06a04a01/Werewolves-of-Chernobyl-by-K-A-Merikan.pdf
    • http://muicuiu.dumb1.com/2a09a07a02a06a01/The-Friend-Zone-Chloe-and-Skye-The-Friend-Zone-1-by-Tabetha-Thompson.pdf
    • http://muicuiu.dumb1.com/6a01a06a04a03a03/The-Management-of-Uncertainty-Learning-from-Chernobyl-by-A-Liberatore.pdf
    • http://muicuiu.dumb1.com/4a08a03a01a09a08/Prip-Yat-The-Beast-of-Chernobyl-by-Mike-Kraus.pdf
    • http://muicuiu.dumb1.com/1a02a06a00a01a08/Chernobyl-Werewolf-Team-Greywolf-Series-2-by-Eva-Gordon.pdf
    • http://muicuiu.dumb1.com/6a07a04a06a08a07/Radioactive-Zombie-Apocalypse-A-Durable-Mutation-by-Fritz-Weiss.pdf
    • http://muicuiu.dumb1.com/7a05a04a00a02a02/Glenn-Beck-s-Common-Sense-The-Case-Against-an-Ouf-of-Control-Government-Inspired-by-Thomas-Paine-by-Glenn-Beck.pdf
    • http://muicuiu.dumb1.com/1a04a08a04a03/Radioactive-Marie-and-Pierre-Curie-A-Tale-of-Love-and-Fallout-by-Lauren-Redniss.pdf
    • http://muicuiu.dumb1.com/5a07a00a00/Spill-Zone-Spill-Zone-1-by-Scott-Westerfeld.pdf
    • http://muicuiu.dumb1.com/1a00a01a05a09a01a04/Kunstliche-Radioaktive-Isotope-in-Physiologie-Diagnostik-Und-Therapie-Radioactive-Isotopes-in-Physiology-Diagnostics-and-Therapy-by-Herbert-Schwiegk.pdf
    • http://muicuiu.dumb1.com/1a01a03a00a06a01a02/Manic-A-Memoir-by-Terri-Cheney.pdf
    • http://muicuiu.dumb1.com/1a05a08a07a07a00/Manic-A-Memoir-by-Terri-Cheney.pdf
    • http://muicuiu.dumb1.com/4a04a08a06a04a01/Werewolves-of-Chernobyl-by-K-A-Merika

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