Malicious PDF — malware analysis report

Static analysis result for SHA-256 39a210a4efbac09d…

MALICIOUS

PDF

15.7 KB Created: 2019-04-30 03:49:54 +01:00 Authoring application: mPDF 5.7
MD5: 2f453a45a420d2191d38e395fde4c184 SHA-1: dcc52f12ff3d47e12179eb5d4c7bd08cfa9cba9d SHA-256: 39a210a4efbac09d4e034ca9c2e37758791a0d9c5bfb45105a490e58b5061002
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO manipulation or to distribute further malicious content. The ML classifier strongly indicated maliciousness. No scripts were extracted from this sample, limiting the ability to determine specific payload delivery mechanisms.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9778

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/1a07a00a08a04a09/The-Book-of-Em-The-Last-Gatekeeper-by-Richard-Brant.pdf
    • http://muicuiu.dumb1.com/1a00a07a03a09a08/The-Gatekeeper-The-Gatekeeper-1-by-Richard-Blackburn.pdf
    • http://muicuiu.dumb1.com/1a06a02a04a03a07/Begin-Anew-The-New-Day-1-by-Richard-Brant.pdf
    • http://muicuiu.dumb1.com/3a04a07a05a08a00/The-Gatekeeper-s-Promise-Gatekeeper-s-Saga-6-by-Eva-Pohler.pdf
    • http://muicuiu.dumb1.com/4a01a03a06a06a09/The-Gatekeeper-s-Secret-Gatekeeper-s-Saga-5-by-Eva-Pohler.pdf
    • http://muicuiu.dumb1.com/2a09a06a08a06a04/The-Gatekeeper-s-House-Gatekeeper-s-Saga-4-by-Eva-Pohler.pdf
    • http://muicuiu.dumb1.com/4a07a08a02a01a07/The-Descendant-and-the-Demon-s-Fork-Max-and-the-Gatekeeper-Book-III-by-James-Todd-Cochrane.pdf
    • http://muicuiu.dumb1.com/1a08a02a00a07a09/The-Gatekeeper-s-Saga-Gatekeeper-s-Saga-1-6-by-Eva-Pohler.pdf
    • http://muicuiu.dumb1.com/2a08a03a03a06a04/Richard-Doyle-s-Fairyland-Dover-Art-Coloring-Book-by-Richard-Doyle.pdf
    • http://muicuiu.dumb1.com/2a01a02a06a04a01/Unhidden-The-Gatekeeper-Chronicles-1-by-Dina-Given.pdf
    • http://muicuiu.dumb1.com/2a08a03a07a06a04/Marked-by-Sin-The-Gatekeeper-Chronicles-1-by-Jasmine-Walt.pdf
    • http://muicuiu.dumb1.com/2a08a03a07a06a09/Hunted-by-Sin-The-Gatekeeper-Chronicles-2-by-Jasmine-Walt.pdf
    • http://muicuiu.dumb1.com/7a05a08a02a07/Sons-of-Entropy-The-Gatekeeper-Trilogy-3-by-Christopher-Golden.pdf
    • http://muicuiu.dumb1.com/4a04a09a07a00a09/The-Gatekeeper-The-Chronicles-of-Prudence-the-Foundling-Fairy-1-by-Kim-Watts.pdf
    • http://muicuiu.dumb1.com/3a08a06a09a04a00/Echoes-by-Jason-Brant.pdf
    • http://muicuiu.dumb1.com/1a06a07a06a08a08/Demonmachy-by-Brant-Danay.pdf
    • http://muicuiu.dumb1.com/1a02a01a02a08/The-Business-of-Strangers-by-Kylie-Brant.pdf
    • http://muicuiu.dumb1.com/3a05a07a07a02a06/Devoured-The-Hunger-1-by-Jason-Brant.pdf
    • http://muicuiu.dumb1.com/1a00a08a00a07a05a05/Mike-Piazza-by-Brant-James.pdf
    • http://muicuiu.dumb1.com/3a05a09a07a08a05/Blitz-Inspector-Brant-4-by-Ken-Bruen.pdf

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