Malicious PDF — malware analysis report

Static analysis result for SHA-256 13464c336b2cc0b8…

MALICIOUS

PDF

18.6 KB Created: 2020-03-14 00:16:04 +00:00 Authoring application: mPDF 5.7
MD5: b75be0bf13ce0132dddc7dd88f80eb04 SHA-1: 89f0aa4525749adf3280c5457c1711fa93264914 SHA-256: 13464c336b2cc0b8e18d47e3bef2ce4dde0e35388d4b9f1f108ebb3b9a237013
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to external PDF files, detected by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged this PDF as malicious. The document body, though heavily obfuscated, contains references to these URLs, suggesting the primary purpose is to redirect users to this link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9920

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://rtuninnsi.myhome.cx/46a66a76a46a76a6/A-Pocket-Full-of-Murder-Uncommon-Magic-1-by-R-J-Anderson.pdf
    • http://rtuninnsi.myhome.cx/16a16a36a26a46a56a6/Miss-Marple-Meets-Murder-The-Mirror-Crack-d-A-Pocket-Full-of-Rye-At-Bertram-s-Hotel-The-Moving-Finger-by-Agatha-Christie.pdf
    • http://rtuninnsi.myhome.cx/36a96a96a66a96a8/A-Pocket-Full-of-Rye-Miss-Marple-7-by-Agatha-Christie.pdf
    • http://rtuninnsi.myhome.cx/46a86a96a96a56a5/Plunge-Crafting-the-Uncommon-Midlife-by-Mari-Anderson.pdf
    • http://rtuninnsi.myhome.cx/66a06a56a66a86a6/Murder-on-the-Green-A-gripping-crime-mystery-full-of-cooking-and-murder-by-H-V-Coombs.pdf
    • http://rtuninnsi.myhome.cx/26a86a76a96a46a2/Miss-Marple-Omnibus-Volume-2-A-Caribbean-Mystery-Pocket-Full-of-Rye-Mirror-Crack-d-from-Side-to-Side-They-Do-It-with-Mirrors-by-Agatha-Christie.pdf
    • http://rtuninnsi.myhome.cx/26a86a36a56a36a8/Full-Metal-Magic-by-J-A-Cipriano.pdf
    • http://rtuninnsi.myhome.cx/26a56a46a06a86a6/Uncommon-Stock-Exit-Strategy-The-Uncommon-Series-3-by-Eliot-Peper.pdf
    • http://rtuninnsi.myhome.cx/16a76a76a46a16a6/Uncommon-Pleasure-Uncommon-1-by-Anne-Calhoun.pdf
    • http://rtuninnsi.myhome.cx/16a16a26a46a36a46a8/The-Magic-Flute-Die-Zauberflote-in-Full-Score-by-Wolfgang-Amadeus-Mozart.pdf
    • http://rtuninnsi.myhome.cx/16a06a26a06a66a86a8/The-Murder-at-the-Vicarage-A-BBC-Radio-4-Full-Cast-Dramatisation-by-Agatha-Christie.pdf
    • http://rtuninnsi.myhome.cx/36a26a96a26a76a6/Murder-out-of-the-Blue-Maliha-Anderson-1-by-Steve-Turnbull.pdf
    • http://rtuninnsi.myhome.cx/16a06a26a86a56a06a9/Murder-amp-Single-Malt-by-Mark-Anderson-Esquire.pdf
    • http://rtuninnsi.myhome.cx/26a26a56a86a06a5/Murder-She-Wrote-Hooray-for-Homicide-Jessica-Fletcher-1-by-James-Anderson.pdf
    • http://rtuninnsi.myhome.cx/26a16a96a26a26a4/Murder-Magic-and-What-We-Wore-by-Kelly-Jones.pdf
    • http://rtuninnsi.myhome.cx/36a56a36a86a66a4/Magic-Can-Be-Murder-by-Vivian-Vande-Velde.pdf
    • http://rtuninnsi.myhome.cx/16a56a86a06a46a6/Murder-and-Magic-Lord-Darcy-1-by-Randall-Garrett.pdf
    • http://rtuninnsi.myhome.cx/16a46a26a96a86a0/As-if-by-Magic-Jack-Haldean-Murder-Mystery-3-by-Dolores-Gordon-Smith.pdf
    • http://rtuninnsi.myhome.cx/96a06a36a56a76a7/XSLT-1-0-Pocket-Reference-Pocket-Reference-by-Evan-Lenz.pdf
    • http://rtuninnsi.myhome.cx/46a26a06a76a9/Pick-Up-Game-A-Full-Day-of-Full-Court-by-Marc-Aronson.pdf

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