Malicious PDF — malware analysis report

Static analysis result for SHA-256 266a18224ec8c9c8…

MALICIOUS

PDF

19.1 KB Created: 2019-04-30 03:49:08 +01:00 Authoring application: mPDF 5.7
MD5: 866975b60b70c9c1e202e5ffbf6a5f45 SHA-1: dc00cb47c5c1f4c20223c56132aaec0c07a9d17f SHA-256: 266a18224ec8c9c8167612e93e3a16b273c2db8eb26953cb20240fca630edd3d
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO poisoning or to distribute further malicious content. The ML classifier strongly indicated maliciousness. While the specific intent of the linked PDFs is unclear, the sheer volume and the heuristic firing suggest a malicious distribution or redirection scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9920

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/1a06a06a07a09a01/Murder-on-Vacation-Molly-Sutton-Mysteries-Book-6-by-Nell-Goddin.pdf
    • http://muicuiu.dumb1.com/1a03a04a07a02a04/Still-Life-With-Murder-Nell-Sweeney-Mysteries-1-by-P-B-Ryan.pdf
    • http://muicuiu.dumb1.com/3a02a00a01a09a05/Still-Life-With-Murder-Nell-Sweeney-Mysteries-1-by-P-B-Ryan.pdf
    • http://muicuiu.dumb1.com/8a06a02a05a02a08/Murder-on-Black-Friday-Nell-Sweeney-Mysteries-4-by-P-B-Ryan.pdf
    • http://muicuiu.dumb1.com/4a08a07a08a03a04/Murder-in-a-Mill-Town-Nell-Sweeney-Mysteries-2-by-P-B-Ryan.pdf
    • http://muicuiu.dumb1.com/1a06a03a07a00a05/Murder-in-a-Mill-Town-Nell-Sweeney-Mysteries-2-by-P-B-Ryan.pdf
    • http://muicuiu.dumb1.com/3a02a04a01a02a05/Murder-on-the-Home-Front-A-True-Story-of-Morgues-Murderers-and-Mysteries-During-the-London-Blitz-by-Molly-Lefebure.pdf
    • http://muicuiu.dumb1.com/8a06a02a05a08a06/The-Nell-Sweeney-Historical-Mysteries-Nell-Sweeney-Mysteries-1-6-by-P-B-Ryan.pdf
    • http://muicuiu.dumb1.com/1a01a03a00a07a00a02/Murder-in-the-Queen-s-Garden-The-Elizabethan-Mysteries-Book-Three-by-Amanda-Carmack.pdf
    • http://muicuiu.dumb1.com/2a09a08a04a03a00/Murder-in-the-Secret-Garden-Book-Retreat-Mysteries-3-by-Ellery-Adams.pdf
    • http://muicuiu.dumb1.com/3a07a02a00a02a02/The-Sculthorpe-Murder-The-Detective-Lavender-Mysteries-Book-3-by-Karen-Charlton.pdf
    • http://muicuiu.dumb1.com/2a09a07a08a01a04/Knitting-Up-a-Murder-Yarn-Genie-Mysteries-Book-1-by-Celeste-Bennett.pdf
    • http://muicuiu.dumb1.com/2a01a03a05a05a06/Murder-in-the-Paperback-Parlor-Book-Retreat-Mysteries-2-by-Ellery-Adams.pdf
    • http://muicuiu.dumb1.com/9a01a03a02a05a01/Aoife-s-Chariot-Mirrored-Murder-The-Imogen-and-Hugh-Croft-Mysteries-Book-1-by-Katherine-Pathak.pdf
    • http://muicuiu.dumb1.com/2a08a08a07a06a00/The-Invisible-Chimes-Judy-Bolton-Mysteries-3-by-Margaret-Sutton.pdf
    • http://muicuiu.dumb1.com/1a03a06a02a01a06/The-Haunted-Road-Judy-Bolton-Mysteries-25-by-Margaret-Sutton.pdf
    • http://muicuiu.dumb1.com/1a01a09a07a02a00/Seven-Days-and-Six-Worst-Case-Scenarios-Victoria-Douglas-Vacation-Mysteries-1-by-Leslie-Huggans.pdf
    • http://muicuiu.dumb1.com/8a06a02a05a03a01/A-Bucket-of-Ashes-Nell-Sweeney-Mysteries-6-by-P-B-Ryan.pdf
    • http://muicuiu.dumb1.com/3a09a09a07a04a01/A-Bucket-of-Ashes-Nell-Sweeney-Mysteries-6-by-P-B-Ryan.pdf
    • http://muicuiu.dumb1.com/8a06a02a05a02a07/Death-on-Beacon-Hill-Nell-Sweeney-Mysteries-3-by-P-B-Ryan.pdf
    • http://muicuiu.dumb1.com/1a01a03a00a07a00a02/Mur

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