Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f1a95e2be9635aa…

MALICIOUS

PDF

12.9 KB Created: 2019-04-30 04:48:16 +01:00 Authoring application: mPDF 5.7
MD5: 1ef3c2cdc49fa03a817a5222d6648606 SHA-1: d8528200468ee1bbc491e8c875a8f2b68a2035c4 SHA-256: 9f1a95e2be9635aa8986b6ccb90e9c00c5bc91eeb2f43c5a4228562b0d6c9fae
90 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. While many of these links were classified as benign, the sheer volume and the nature of the heuristic suggest a malicious intent, possibly for SEO manipulation or to host further malicious content. The ML_NYX_PDF_MALICIOUS classifier also flagged the document as malicious with high confidence. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9006

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/6a02a04a09a09a07/More-Than-Famous-Famous-2-by-Kahlen-Aymes.pdf
    • http://muicuiu.dumb1.com/6a02a04a09a09a05/Before-Ryan-Was-Mine-The-Remembrance-Trilogy-0-5-by-Kahlen-Aymes.pdf
    • http://muicuiu.dumb1.com/6a02a04a09a09a09/Fearless-Anthology---12-Sizzling-Stories-by-Kahlen-Aymes.pdf
    • http://muicuiu.dumb1.com/3a08a03a08a06a00/Absolutely-Famous-Famous-2-by-Heather-C-Leigh.pdf
    • http://muicuiu.dumb1.com/4a02a01a07a02/Relatively-Famous-Famous-1-by-Heather-C-Leigh.pdf
    • http://muicuiu.dumb1.com/3a08a03a08a05a08/Relatively-Famous-Famous-1-by-Heather-C-Leigh.pdf
    • http://muicuiu.dumb1.com/1a04a08a01a07a06/Angel-After-Dark-After-Dark-1-by-Kahlen-Aymes.pdf
    • http://muicuiu.dumb1.com/3a05a03a01a09a08/Famous-in-Love-Famous-in-Love-1-by-Rebecca-Serle.pdf
    • http://muicuiu.dumb1.com/4a02a02a09a00/Five-Get-into-a-Fix-Famous-Five-17-by-Enid-Blyton.pdf
    • http://muicuiu.dumb1.com/1a01a01a01a09a05/Famous-by-Default-by-M-K-Harkins.pdf
    • http://muicuiu.dumb1.com/3a07a07a03a08a08/Five-Get-into-a-Fix-Famous-Five-17-by-Enid-Blyton.pdf
    • http://muicuiu.dumb1.com/1a05a02a01a06/Almost-Famous-by-David-Small.pdf
    • http://muicuiu.dumb1.com/1a00a06a02a08a08a00/Famous-by-Kate-Langdon.pdf
    • http://muicuiu.dumb1.com/2a02a01a08a04a08/Famous-by-Todd-Strasser.pdf
    • http://muicuiu.dumb1.com/2a08a05a05a06a08/Relatively-Famous-by-Jessica-Park.pdf
    • http://muicuiu.dumb1.com/1a01a00a00a07a00/Becoming-Famous-by-Natalie-Scott.pdf
    • http://muicuiu.dumb1.com/1a05a04a03a07a07/Famous-Men-Who-Never-Lived-by-K-Chess.pdf
    • http://muicuiu.dumb1.com/2a09a04a02a09a00/Bitch-and-Famous-by-Cat-Caruthers.pdf
    • http://muicuiu.dumb1.com/4a07a01a00a02/Five-Go-Off-to-Camp-Famous-Five-7-by-Enid-Blyton.pdf
    • http://muicuiu.dumb1.com/4a01a01a06a09/Five-Go-to-Smuggler-s-Top-Famous-Five-4-by-Enid-Blyton.pdf
    • http://muicuiu.dumb1.com/1a00a06a02a08a08a00/Famous-b

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