Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b94da4c6a37a294…

MALICIOUS

PDF

15.9 KB Created: 2019-05-02 01:06:29 +01:00 Authoring application: mPDF 5.7
MD5: c8df89c6af8cf78d1b39d5f67ed7137e SHA-1: 07ffc96fe6ea0fb7c54c7b54aaba9a5f5fd07095 SHA-256: 2b94da4c6a37a2943572971b1afb7840d59a6b99b2f841dc21b9311eb0aa562e
90 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file contains a large number of embedded links to external PDF documents, a technique often used for SEO poisoning or to distribute malicious content. The ML classifier also flagged this PDF as malicious. No scripts were extracted from this sample, and the document body was not readable. The primary attack pattern observed is the mass linking to external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9800

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.du
    • http://muicuiu.dumb1.com/2a03a00a00a09a00/Diana-Tregarde-Investigates-Diana-Tregarde-1-3-by-Mercedes-Lackey.pdf
    • http://muicuiu.dumb1.com/3a09a01a09a07a00/With-Love-from-Diana-the-Princess-of-Wales-Personal-Astrologer-Shares-Her-First-Hand-Account-of-Diana-s-Turbulent-Years-by-Penny-Thornton.pdf
    • http://muicuiu.dumb1.com/2a00a04a07a00a04/A-Tangled-Web-by-Mercedes-Lackey.pdf
    • http://muicuiu.dumb1.com/3a01a03a05a07a01/Brightly-Burning-by-Mercedes-Lackey.pdf
    • http://muicuiu.dumb1.com/3a09a02a00a05a01/Charmed-Destinies-by-Mercedes-Lackey.pdf
    • http://muicuiu.dumb1.com/4a09a07a03a00a00/Dragon-in-Distress-by-Mercedes-Lackey.pdf
    • http://muicuiu.dumb1.com/3a03a02a03a03a05/The-River-s-Gift-by-Mercedes-Lackey.pdf
    • http://muicuiu.dumb1.com/2a08a07a07a06a08/SKitty-Shipscat-1-by-Mercedes-Lackey.pdf
    • http://muicuiu.dumb1.com/2a00a03a04a07a01/Home-from-the-Sea-Elemental-Masters-7-by-Mercedes-Lackey.pdf
    • http://muicuiu.dumb1.com/1a09a06a01a00a04/Gwenhwyfar-The-White-Spirit-by-Mercedes-Lackey.pdf
    • http://muicuiu.dumb1.com/7a06a00a05a02a03/Dragon-s-Teeth-Martis-2-by-Mercedes-Lackey.pdf
    • http://muicuiu.dumb1.com/6a06a07a06a09a00/A-Host-of-Furious-Fancies-by-Mercedes-Lackey.pdf
    • http://muicuiu.dumb1.com/1a05a02a04a08a03/Legacies-Shadow-Grail-1-by-Mercedes-Lackey.pdf
    • http://muicuiu.dumb1.com/2a08a09a03a09a00/Foundation-The-Collegium-Chronicles-1-by-Mercedes-Lackey.pdf
    • http://muicuiu.dumb1.com/2a03a04a08a09a00/Reserved-for-the-Cat-Elemental-Masters-6-by-Mercedes-Lackey.pdf
    • http://muicuiu.dumb1.com/3a01a09a07a01a03/Owlsight-Owl-Mage-Trilogy-2-by-Mercedes-Lackey.pdf
    • http://muicuiu.dumb1.com/4a06a00a02a04a04/Owlknight-Owl-Mage-Trilogy-3-by-Mercedes-Lackey.pdf
    • http://muicuiu.dumb1.com/3a04a08a06a08a01/Closer-to-Home-The-Herald-Spy-1-by-Mercedes-Lackey.pdf
    • http://muicuiu.dumb1.com/4a02a00a08a07a06/Legacies-Shadow-Grail-1-by-Mercedes-Lackey.pdf
    • http://muicuiu.dumb1.com/2a08a09a04a06a06/Much-Fall-of-Blood-Heirs-of-Alexandria-3-by-Mercedes-Lackey.pdf