Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c8539dbf54952c1…

MALICIOUS

PDF

17.9 KB Created: 2019-04-30 04:27:08 +01:00 Authoring application: mPDF 5.7
MD5: e2ad439b2e33466867068764a0842883 SHA-1: e576b5feb944bf4e487f3b7f17f371de4072346c SHA-256: 8c8539dbf54952c123beb3603ae2a79cc56330e448a3a00e94d9f698aabe2006
90 Risk Score

Malware Insights

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

The PDF contains a link farm with 24 external links, primarily pointing to PDF documents hosted on muicuiu.dumb1.com. This technique is often used to distribute malware or phish for credentials by overwhelming search engine indexes or tricking users into downloading malicious files. The ML classifier strongly supports the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9931

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/4a04a07a02a00a03/Robertson-Davies-Man-of-Myth-by-Judith-Skelton-Grant.pdf
    • http://muicuiu.dumb1.com/2a08a05a02a02a00/The-Deptford-Trilogy-by-Robertson-Davies.pdf
    • http://muicuiu.dumb1.com/2a03a06a02a09a09/Murther-amp-Walking-Spirits-by-Robertson-Davies.pdf
    • http://muicuiu.dumb1.com/3a00a09a08a09a06/Fifth-Business-The-Deptford-Trilogy-1-by-Robertson-Davies.pdf
    • http://muicuiu.dumb1.com/3a03a07a09a08/Fifth-Business-The-Deptford-Trilogy-1-by-Robertson-Davies.pdf
    • http://muicuiu.dumb1.com/2a03a05a08a06a04/The-Cunning-Man-Toronto-Trilogy-2-by-Robertson-Davies.pdf
    • http://muicuiu.dumb1.com/5a08a08a06a07/Leaven-of-Malice-Salterton-Trilogy-2-by-Robertson-Davies.pdf
    • http://muicuiu.dumb1.com/1a03a04a04a04a08/Murther-and-Walking-Spirits-Toronto-Trilogy-1-by-Robertson-Davies.pdf
    • http://muicuiu.dumb1.com/2a08a04a08a04a03/Leaven-of-Malice-Salterton-Trilogy-Book-2-by-Robertson-Davies.pdf
    • http://muicuiu.dumb1.com/5a09a01a08a05/The-Salterton-Trilogy-Tempest-Tost-Leaven-of-Malice-A-Mixture-of-Frailties-by-Robertson-Davies.pdf
    • http://muicuiu.dumb1.com/1a01a00a02a07a09a07/Skelton-A-Selection-from-the-Poetical-Works-of-John-Skelton-by-John-Skelton.pdf
    • http://muicuiu.dumb1.com/4a00a03a09a06a05/Myth-in-Human-History-by-Grant-L-Voth.pdf
    • http://muicuiu.dumb1.com/1a01a00a02a06a09a04/Red-Skelton-s-Favorite-Ghost-Stories-by-Red-Skelton.pdf
    • http://muicuiu.dumb1.com/1a01a00a02a06a04a04/Trouble-at-Skelton-Hall-Skelton-Hall-2-by-Elinor-M-Brent-Dyer.pdf
    • http://muicuiu.dumb1.com/2a02a02a03a08a08/U-S-Grant-The-Civil-War-Years-Grant-Moves-South-and-Grant-Takes-Command-by-Bruce-Catton.pdf
    • http://muicuiu.dumb1.com/3a01a08a09a06a01/The-Autobiography-of-Pat-Robertson-Shout-It-from-the-Housetops-by-Pat-Robertson.pdf
    • http://muicuiu.dumb1.com/4a02a09a04a08a06/Myth-History-and-Faith-The-Mysteries-of-Christian-Myth-and-Imagination-by-Morton-T-Kelsey.pdf
    • http://muicuiu.dumb1.com/2a01a04a07a08a03/Myth-of-Perfection-Confessions-of-a-Housewife-Myth-Series-by-Kate-Maxwell.pdf
    • http://muicuiu.dumb1.com/2a09a04a09a07a05/Myth-Nomers-and-Im-Pervections-Myth-Adventures-8-by-Robert-Lynn-Asprin.pdf
    • http://muicuiu.dumb1.com/2a07a03a02a07a01/Myth-ion-Improbable-Myth-Adventures-11-by-Robert-Lynn-Asprin.pdf
    • http://muicuiu.dumb1.com/5a09a01a08a05/The-Salterton-Trilogy-Tempest-Tost-Leaven-of-Malice-A-Mixture-of-Frailt

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