Malicious PDF — malware analysis report

Static analysis result for SHA-256 f02fb77a6b04da90…

MALICIOUS

PDF

15.7 KB Created: 2019-04-29 23:27:42 +01:00 Authoring application: mPDF 5.7
MD5: 13a766d8695ec520607fdc639f3f97a3 SHA-1: fa88f78fd5fd385f5f516a3a3ea1533d8c207da4 SHA-256: f02fb77a6b04da90655bdfb5c647849e714f85f85e2884a9527a5547aa6d21bf
90 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs pointing to other PDF documents, characteristic of a link farm. The ML classifier strongly indicated maliciousness. While the URLs themselves are currently marked as benign, the sheer volume and structure suggest a malicious intent, possibly for SEO manipulation or to host further malicious content. No scripts were extracted, and the document body was unreadable.

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/3a04a07a04a06a02/Bull-God-Greek-Myths-4-by-Roberta-Gellis.pdf
    • http://muicuiu.dumb1.com/3a04a07a04a06a00/Dazzling-Brightness-Greek-Myths-1-by-Roberta-Gellis.pdf
    • http://muicuiu.dumb1.com/3a04a07a05a06a06/Enchanted-Fire-Greek-Myths-3-by-Roberta-Gellis.pdf
    • http://muicuiu.dumb1.com/3a02a08a09a04a00/Fortune-s-Bride-by-Roberta-Gellis.pdf
    • http://muicuiu.dumb1.com/3a09a08a05a01a06/The-Cornish-Heiress-by-Roberta-Gellis.pdf
    • http://muicuiu.dumb1.com/5a08a03a06a01a03/Masques-of-Gold-by-Roberta-Gellis.pdf
    • http://muicuiu.dumb1.com/3a09a06a09a08a00/The-Kent-Heiress-by-Roberta-Gellis.pdf
    • http://muicuiu.dumb1.com/3a02a01a07a00a07/A-Mortal-Bane-Magdalene-La-Batarde-1-by-Roberta-Gellis.pdf
    • http://muicuiu.dumb1.com/3a06a02a06a00a01/Lucrezia-Borgia-and-the-Mother-of-Poisons-by-Roberta-Gellis.pdf
    • http://muicuiu.dumb1.com/4a07a05a01a04a09/Fire-Song-Siren-Song-3-by-Roberta-Gellis.pdf
    • http://muicuiu.dumb1.com/4a05a05a08a00/The-Greek-Myths-by-Robert-Graves.pdf
    • http://muicuiu.dumb1.com/3a01a06a03a02a09/Favorite-Greek-Myths-by-Mary-Pope-Osborne.pdf
    • http://muicuiu.dumb1.com/7a08a05a08a02a03/The-Classics-Greek-Myths-by-Sally-Pomme-Clayton.pdf
    • http://muicuiu.dumb1.com/3a07a03a02a04a03/D-aulaires-Book-of-Greek-Myths-by-Ingri-d-39-Aulaire.pdf
    • http://muicuiu.dumb1.com/4a06a03a00a05a08/Greek-Myths-For-Young-Children-by-Heather-Amery.pdf
    • http://muicuiu.dumb1.com/7a08a05a05a01a01/Greek-Myths-Stories-of-Sun-Stone-and-Sea-by-Sally-Pomme-Clayton.pdf
    • http://muicuiu.dumb1.com/3a02a00a01a01a07/The-Greek-and-Roman-Myths-A-Guide-to-the-Classical-Stories-by-Philip-Matyszak.pdf
    • http://muicuiu.dumb1.com/3a04a07a02a08a01/Aphrodite-s-Blessings-Love-Stories-from-the-Greek-Myths-by-Clemence-McLaren.pdf
    • http://muicuiu.dumb1.com/1a00a05a03a02a09/Oh-My-Gods-A-Modern-Retelling-of-Greek-and-Roman-Myths-by-Philip-Freeman.pdf
    • http://muicuiu.dumb1.com/3a03a04a03a02a00/Classic-Myths-to-Read-Aloud-The-Great-Stories-of-Greek-and-Roman-Mythology-Specially-Arranged-for-Children-Five-and-Up-by-an-Educational-Expert-by-William-F-Russell.pdf
    • http://muicuiu.dumb1.com/

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