Malicious PDF — malware analysis report

Static analysis result for SHA-256 653725c3819e9d35…

MALICIOUS

PDF

17.4 KB Created: 2019-05-07 03:02:30 +01:00 Authoring application: mPDF 5.7
MD5: e1e35004cc2fe0a5549f60ba2db9060a SHA-1: fece0ae7fd7a204c885fd27edfc146831be7692c SHA-256: 653725c3819e9d35575bfc650878c1d68fbff86e60d65eb83c9bc60702ff82dd
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. While the document body is heavily obfuscated, the presence of numerous links to other PDF files suggests an attempt to manipulate search engine results or redirect users to malicious content. No scripts were extracted, but the structure and link farm heuristic indicate a likely malicious intent to redirect users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9925

Heuristics 3

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/1a00a01a09a02a07a09/Soul-Breather-21st-Century-Sirens-1-by-T-Stedman.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/1a01a06a01a08a06a01/Stedman-s-Medical-Abbreviations-Acronyms-amp-Symbols-by-Stedman-39-s.pdf
    • http://muicuiu.dumb1.com/1a01a06a01a07a09a03/Stedman-s-Medical-Abbreviations-Acronyms-and-Symbols-by-Stedman-39-s.pdf
    • http://muicuiu.dumb1.com/6a01a00a07a00a00/Mysticism-in-the-21st-Century-by-Connell-Monette.pdf
    • http://muicuiu.dumb1.com/1a01a02a00a05a07a01/The-Tolstoys-in-the-21st-Century-by-Oleg-Tolstoy.pdf
    • http://muicuiu.dumb1.com/6a06a01a01a01/U-P-into-the-21st-Century-and-Other-Essays-by-Francisco-Nemenzo.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/1a00a05a03a08a02a06/Beyond-Shock-and-Awe-Warfare-in-the-21st-Century-by-Eric-L-Haney.pdf
    • http://muicuiu.dumb1.com/2a01a04a02a09a02/Millennials-Speak-Essays-on-the-21st-Century-by-R-P-Thead.pdf
    • http://muicuiu.dumb1.com/1a00a08a05a04a06a08/Reforming-Opic-for-the-21st-Century-by-Theodore-H-Moran.pdf
    • http://muicuiu.dumb1.com/9a09a08a01a09a03/Reuters-Sports-in-the-21st-Century-by-Jassim-Ahmad.pdf
    • http://muicuiu.dumb1.com/4a00a00a03a02a01/SQ21-Singapore-Queers-in-the-21st-Century-by-Ng-Yi-Sheng.pdf
    • http://muicuiu.dumb1.com/1a01a03a03a07a09a09/South-Africa-in-the-21st-Century-by-Ettagale-Blauer.pdf
    • http://muicuiu.dumb1.com/2a05a03a02a02a09/Teaching-Math-in-the-21st-Century-by-Barry-Garelick.pdf
    • http://muicuiu.dumb1.com/6a01a09a02a07a06/Gotham-City-Sirens-Volume-2-Songs-of-the-Sirens-by-Paul-Dini.pdf
    • http://muicuiu.dumb1.com/6a05a07a07a07a00/Eat-Real-Food-or-Else-A-Cookbook-for-the-21st-Century-by-Lien-Nguyen.pdf