Malicious PDF — malware analysis report

Static analysis result for SHA-256 28e9d3b2c5a91ba7…

MALICIOUS

PDF

15.4 KB Created: 2019-04-30 04:43:06 +01:00 Authoring application: mPDF 5.7
MD5: 509372e2f02812281e439ed15f2046e9 SHA-1: fff703d336f35da9b3d95c4b528b07327d76a933 SHA-256: 28e9d3b2c5a91ba71a7fd84e1e462dcb2dbd5e4c7a7fc51f022d062ff49889f6
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file exhibits characteristics of a malicious document, including a high ML classifier score and a heuristic indicating a link farm. The document body contains numerous embedded URLs, suggesting an attempt to redirect users to external content, likely for malicious purposes. While no scripts were explicitly extracted, the presence of embedded URLs and the 'PDF_SEO_LINK_FARM' heuristic strongly suggest a social engineering tactic to trick users into downloading potentially harmful files.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9880

Heuristics 3

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/7a01a00a04a01/Snow-White-and-the-Seven-Dwarfs-by-Wanda-G-g.pdf
    • http://muicuiu.dumb1.com/4a06a07a01a07/Snow-A-Retelling-of-Snow-White-and-the-Seven-Dwarfs-by-Tracy-Lynn.pdf
    • http://muicuiu.dumb1.com/1a07a02a02a05a01/Snow-White-and-the-Seven-Dwarfs-by-Vera-Southgate.pdf
    • http://muicuiu.dumb1.com/1a01a03a07a07a04a07/Snow-White-and-the-Seven-Dwarfs-by-Carol-Sorgen.pdf
    • http://muicuiu.dumb1.com/2a04a04a08a00a05/Snow-White-and-the-Seven-Dwarfs-A-Tale-from-the-Brothers-Grimm-by-Randall-Jarrell.pdf
    • http://muicuiu.dumb1.com/1a00a05a07a05a09a06/Snow-White-and-the-Seven-Dwarfs-Let-s-Read-Aloud-Level-1-by-Abrar-Mohsin.pdf
    • http://muicuiu.dumb1.com/3a07a04a08a07a00/Snow-White-and-the-Seven-Dwarfs-A-Tale-from-the-Brothers-Grimm-by-Nancy-Ekholm-Burkert.pdf
    • http://muicuiu.dumb1.com/3a07a03a07a02a08/White-Christmas-Pie-by-Wanda-E-Brunstetter.pdf
    • http://muicuiu.dumb1.com/4a04a00a07a08a02/A-Dream-of-Ebony-and-White-A-Retelling-of-Snow-White-Beyond-the-Four-Kingdoms-Book-4-by-Melanie-Cellier.pdf
    • http://muicuiu.dumb1.com/4a08a00a01a01a00/Snow-White-by-Charles-Santore.pdf
    • http://muicuiu.dumb1.com/6a04a03a02a09/Almost-Snow-White-by-Jeffrey-Blount.pdf
    • http://muicuiu.dumb1.com/2a06a03a03a00a02/Snow-White-and-Rose-Red-by-Ed-McBain.pdf
    • http://muicuiu.dumb1.com/3a01a01a07a09a06/Snow-White-by-Trixie-Belle.pdf
    • http://muicuiu.dumb1.com/5a00a04a05a02a06/Snow-Angel-by-Chantilly-White.pdf
    • http://muicuiu.dumb1.com/2a00a03a08a09a01/Snow-White-Gets-Her-Say-by-Chris-Wind.pdf
    • http://muicuiu.dumb1.com/4a07a00a03a00a09/Snow-White-by-Jacob-Grimm.pdf
    • http://muicuiu.dumb1.com/5a08a09a02a08a08/Snow-White-by-Jacob-Grimm.pdf
    • http://muicuiu.dumb1.com/1a02a03a06a08a09/Snow-White-and-the-Seven-Samurai-by-Tom-Holt.pdf
    • http://muicuiu.dumb1.com/7a00a06a05a04/Snow-White-by-Jacob-Grimm.pdf
    • http://muicuiu.dumb1.com/1a07a03a00a02a06/Snow-White-in-New-York-by-Fiona-French.pdf

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