Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a68bddb4900a909…

MALICIOUS

PDF

18.2 KB Created: 2019-05-02 01:47:14 +01:00 Authoring application: mPDF 5.7
MD5: bd148188b5826ad1473af19df69176b4 SHA-1: 086280e6a652a952d35590d94a9cd3c99e12d714 SHA-256: 9a68bddb4900a9097a4f3b12eec9961d3994ad29c53b90049ea068cf546f41c7
90 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file contains a large number of embedded URLs, identified as a link farm. While the URLs themselves are currently classified as benign, the sheer volume and structure suggest a malicious intent, possibly for SEO poisoning or to redirect users to malicious sites. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9931

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/1a00a05a03a08a02a06/Beyond-Shock-and-Awe-Warfare-in-the-21st-Century-by-Eric-L-Haney.pdf
    • http://muicuiu.dumb1.com/1a00a01a09a02a07a08/Roget-s-21st-Century-Thesaurus-21st-Century-Reference-by-Barbara-Ann-Kipfer.pdf
    • http://muicuiu.dumb1.com/3a06a07a04a02a07/Post-Modern-Pilgrims-First-Century-Passion-for-the-21st-Century-World-by-Leonard-Sweet.pdf
    • http://muicuiu.dumb1.com/9a08a06a00a07a04/The-Political-Mind-Why-You-Can-t-Understand-21st-Century-American-Politics-with-an-18th-Century-Brain-by-George-Lakoff.pdf
    • http://muicuiu.dumb1.com/1a01a03a04a05a09a09/Amigo-Warfare-by-Eric-Gamalinda.pdf
    • http://muicuiu.dumb1.com/1a09a01a03a02a06/Another-Bloody-Century-Future-Warfare-by-Colin-S-Gray.pdf
    • http://muicuiu.dumb1.com/5a01a01a07a06a04/Shock-and-Awe-Glam-Rock-and-Its-Legacy-from-the-Seventies-to-the-Twenty-first-Century-by-Simon-Reynolds.pdf
    • http://muicuiu.dumb1.com/1a01a02a00a05a07a01/The-Tolstoys-in-the-21st-Century-by-Oleg-Tolstoy.pdf
    • http://muicuiu.dumb1.com/6a01a00a07a00a00/Mysticism-in-the-21st-Century-by-Connell-Monette.pdf
    • http://muicuiu.dumb1.com/6a06a01a01a01/U-P-into-the-21st-Century-and-Other-Essays-by-Francisco-Nemenzo.pdf
    • http://muicuiu.dumb1.com/4a00a00a03a02a01/SQ21-Singapore-Queers-in-the-21st-Century-by-Ng-Yi-Sheng.pdf
    • http://muicuiu.dumb1.com/9a09a08a01a09a03/Reuters-Sports-in-the-21st-Century-by-Jassim-Ahmad.pdf
    • http://muicuiu.dumb1.com/2a03a07a07a06a06/Good-Health-in-the-21st-Century-by-Carole-Hungerford.pdf
    • http://muicuiu.dumb1.com/9a03a01a05a02a09/Maslow-s-Hierarchy-For-The-21st-Century-by-Stanley-F-Bronstein.pdf
    • http://muicuiu.dumb1.com/2a01a04a02a09a02/Millennials-Speak-Essays-on-the-21st-Century-by-R-P-Thead.pdf
    • http://muicuiu.dumb1.com/2a05a03a02a02a09/Teaching-Math-in-the-21st-Century-by-Barry-Garelick.pdf
    • http://muicuiu.dumb1.com/1a01a03a03a07a09a09/South-Africa-in-the-21st-Century-by-Ettagale-Blauer.pdf
    • http://muicuiu.dumb1.com/1a00a08a05a04a06a08/Reforming-Opic-for-the-21st-Century-by-Theodore-H-Moran.pdf
    • http://muicuiu.dumb1.com/1a00a01a09a02a07a09/Soul-Breather-21st-Century-Sirens-1-by-T-Stedman.pdf
    • http://muicuiu.dumb1.com/7a04a06a06a08a06/Visions-How-Science-Will-Revolutionize-the-21st-Century-by-Michio-Kaku.pdf
    • http://muicuiu.dumb1.com/5a01a01a07a06a04/Shock-and-Awe-Glam-Rock-and-Its-Le

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