Malicious PDF — malware analysis report

Static analysis result for SHA-256 55a2f6648b7828a1…

MALICIOUS

PDF

16.0 KB Created: 2019-05-02 01:11:49 +01:00 Authoring application: mPDF 5.7
MD5: 39695f7360b87b37cb278fe27de242e1 SHA-1: 6790b8fc4ce3d5d539318893137cb1eaab89c487 SHA-256: 55a2f6648b7828a199dbf8d50462a1c8689285236829cdb4b78f2a5f87a0788e
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

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. While no scripts were extracted, the PDF structure and embedded URLs suggest a delivery mechanism for potentially harmful content hosted externally.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9811

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.d
    • http://muicuiu.dumb1.com/9a07a01a02a09/Amaryllis-by-Craig-Crist-Evans.pdf
    • http://muicuiu.dumb1.com/4a06a01a08a02a07/North-of-Everything-by-Craig-Crist-Evans.pdf
    • http://muicuiu.dumb1.com/6a01a06a05a03a07/Arcane-by-Craig-Evans.pdf
    • http://muicuiu.dumb1.com/9a00a03a05a05a05/Callogenesis-amp-Micropropagation-Of-Amaryllis-Belladonna-L-Influence-Of-Growth-Regulators-on-Bulbous-plant-And-Antimicrobial-action-Of-Amaryllis-by-Sana-Habib.pdf
    • http://muicuiu.dumb1.com/1a09a03a09a06a04/Fabricating-Jesus-How-Modern-Scholars-Distort-the-Gospels-by-Craig-A-Evans.pdf
    • http://muicuiu.dumb1.com/9a05a02a06a06a06/Anti-Semitism-and-Early-Christianity-Issues-of-Polemic-and-Faith-by-Craig-A-Evans.pdf
    • http://muicuiu.dumb1.com/1a00a09a06a00a02/Scarlet-Reign-Malice-of-the-Dark-Witch-by-R-D-Crist.pdf
    • http://muicuiu.dumb1.com/1a01a05a05a05a06a07/Schatzkammer-Ozean-Volkszahlung-In-Den-Weltmeeren-by-Darlene-Trew-Crist.pdf
    • http://muicuiu.dumb1.com/6a05a03a03a07a08/The-Polaroid-Book-Selections-from-the-Polaroid-Collections-of-Photography-by-Steve-Crist.pdf
    • http://muicuiu.dumb1.com/9a00a03a04a06a02/Looking-Beyond-by-shini-amaryllis.pdf
    • http://muicuiu.dumb1.com/9a00a03a03a06a08/Cruise-of-the-Amaryllis-by-G-H-P-Muhlhauser.pdf
    • http://muicuiu.dumb1.com/9a00a03a04a02a07/Amaryllis-at-the-Fair-by-Anonymous.pdf
    • http://muicuiu.dumb1.com/9a00a03a03a06a01/In-the-Quiet-Night-by-A-C-Amaryllis.pdf
    • http://muicuiu.dumb1.com/9a00a03a03a03a09/Amaryllis-by-Starr-Ockenga.pdf
    • http://muicuiu.dumb1.com/9a00a03a05a06a06/Phoebe-by-Amaryllis-Black.pdf
    • http://muicuiu.dumb1.com/9a00a03a03a06a04/Amaryllis-by-Priscilla-Jenkins.pdf
    • http://muicuiu.dumb1.com/9a00a03a04a01a06/Amaryllis-of-Hawaii-by-Marilyn-Jansen.pdf
    • http://muicuiu.dumb1.com/9a00a03a03a04a00/Amaryllis-at-the-Fair-by-Richard-Jefferies.pdf
    • http://muicuiu.dumb1.com/2a04a07a09a06/Amaryllis-and-Other-Stories-by-Carrie-Vaughn.pdf
    • http://muicuiu.dumb1.com/2a08a04a07a06a06/Amaryllis-St-Helen-s-1-by-Jayne-Castle.pdf

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