Malicious PDF — malware analysis report

Static analysis result for SHA-256 282f9d4d5a0474cc…

MALICIOUS

PDF

15.2 KB Created: 2019-04-30 02:19:03 +01:00 Authoring application: mPDF 5.7
MD5: 19b6588d0f99816ac753463a646c9ca8 SHA-1: 2324bb4938460849ad84c0b05bc755ac7d41b9eb SHA-256: 282f9d4d5a0474cc30cdebf73c8b03cc3edb1754f743395045b2517dffd78fab
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO poisoning or to redirect users to malicious content. The ML classifier strongly indicated maliciousness. While the linked URLs are currently marked as benign, the sheer volume and nature of the links suggest a deceptive intent, likely to drive traffic or distribute further malware.

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/3a03a07a08a05a09/Nelson-De-Mille-Classics-Three-Book-Set-The-Lion-s-Game-Plum-Island-The-Charm-School-by-Nelson-DeMille.pdf
    • http://muicuiu.dumb1.com/9a02a03a08a04/Spencerville-by-Nelson-DeMille.pdf
    • http://muicuiu.dumb1.com/8a02a04a02a05/Mayday-by-Nelson-DeMille.pdf
    • http://muicuiu.dumb1.com/4a04a09a08a09a00/The-Charm-School-by-Nelson-DeMille.pdf
    • http://muicuiu.dumb1.com/3a08a02a06a06/Gold-Coast-by-Nelson-DeMille.pdf
    • http://muicuiu.dumb1.com/6a04a01a07/The-Cuban-Affair-A-Novel-by-Nelson-DeMille.pdf
    • http://muicuiu.dumb1.com/3a03a05a08a00a02/The-Cuban-Affair-by-Nelson-DeMille.pdf
    • http://muicuiu.dumb1.com/3a07a09a03a04a09/The-Cuban-Affair-by-Nelson-DeMille.pdf
    • http://muicuiu.dumb1.com/4a03a05a04a00a00/The-Lion-John-Corey-5-by-Nelson-DeMille.pdf
    • http://muicuiu.dumb1.com/5a08a08a06a06/Wild-Fire-John-Corey-4-by-Nelson-DeMille.pdf
    • http://muicuiu.dumb1.com/3a00a05a06a04a04/Plum-Island-John-Corey-1-by-Nelson-DeMille.pdf
    • http://muicuiu.dumb1.com/8a08a06/Radiant-Angel-John-Corey-7-by-Nelson-DeMille.pdf
    • http://muicuiu.dumb1.com/4a00a00a06a04/Night-Fall-John-Corey-3-by-Nelson-DeMille.pdf
    • http://muicuiu.dumb1.com/8a08a01a09a08a03/The-General-s-Daughter-Paul-Brenner-1-by-Nelson-DeMille.pdf
    • http://muicuiu.dumb1.com/5a08a09a07a05/Mike-Nelson-s-Mind-over-Matters-by-Michael-J-Nelson.pdf
    • http://muicuiu.dumb1.com/1a06a07a04a09a08/1913-by-Oliver-DeMille.pdf
    • http://muicuiu.dumb1.com/9a01a05a01a05/Nelson-Mandela-by-Kadir-Nelson.pdf
    • http://muicuiu.dumb1.com/3a00a04a03a00a02/The-Ring-of-the-King-A-Story-From-Nelson-Mandela-s-Favorite-African-Folktales-by-Nelson-Mandela.pdf
    • http://muicuiu.dumb1.com/5a00a04a02a06a02/Leadership-Education-The-Phases-of-Learning-by-Oliver-DeMille.pdf
    • http://muicuiu.dumb1.com/1a05a04a01a02a04/FreedomShift-3-Choices-to-Reclaim-America-s-Destiny-by-Oliver-DeMille.pdf
    • http://muicuiu.dumb1.com/4a00a00a06a04/Nigh

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