Malicious PDF — malware analysis report

Static analysis result for SHA-256 693e520569aefe26…

MALICIOUS

PDF

19.4 KB Created: 2019-04-29 23:29:41 +01:00 Authoring application: mPDF 5.7
MD5: ad317085f3340b25b8a80104ed517650 SHA-1: 0cfa8ddc94ad14de029b3f8446d55f57340f572c SHA-256: 693e520569aefe26955efc69af1359a840d2c38b8121f4cc2df0cb396062f4be
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, identified as a link farm. While the document body is heavily obfuscated, the presence of a 'download button' heuristic and the link farm suggest an attempt to trick users into downloading further content. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the overall structure points to a malicious document designed to lead users to external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9940

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/3a03a02a08a05/The-Call-of-the-Wild-White-Fang-and-Other-Stories-by-Jack-London.pdf
    • http://muicuiu.dumb1.com/3a03a05a01a08a00/The-Call-of-the-Wild-White-Fang-To-Build-a-Fire-by-Jack-London.pdf
    • http://muicuiu.dumb1.com/5a03a01a03a00a05/The-Call-of-the-Wild-illustrated---first-published-in-1903-1st-Page-Classics-by-Jack-London.pdf
    • http://muicuiu.dumb1.com/7a02a01a05a00a06/The-Call-of-the-Wild-15-Illustrations-Included-Bestselling-Classic-Fiction-Books-by-Jack-London.pdf
    • http://muicuiu.dumb1.com/5a07a07a00a04a04/The-Call-of-the-Wild-Complete-Text-with-Integrated-Study-Guide-from-Shmoop-by-Jack-London.pdf
    • http://muicuiu.dumb1.com/6a04a07a00a01a06/The-Call-of-the-Wild-the-Complete-Novel--Bookclub-Student-Edition-Includes-the-Complete-Unabridged-Book-and-a-Template-for-Notes-Reference-and-Study-After-Each-Chapter-by-Jack-London.pdf
    • http://muicuiu.dumb1.com/5a08a08a02a02a00/White-Fang-By-Jack-London---Illustrated-And-Unabridged-by-Jack-London.pdf
    • http://muicuiu.dumb1.com/3a04a07a00a03a04/The-Portable-Jack-London-by-Jack-London.pdf
    • http://muicuiu.dumb1.com/4a00a06a02a00a05/The-Story-Of-Wild-Goose-Jack-The-Life-And-Work-Of-Jack-Miner-by-James-M-Linton.pdf
    • http://muicuiu.dumb1.com/9a00a00a06a02/Jungle-Jack-My-Wild-Life-by-Jack-Hanna.pdf
    • http://muicuiu.dumb1.com/4a07a04a00a03a09/Off-the-Map-the-call-of-the-Amazonian-wild-by-John-Harrison.pdf
    • http://muicuiu.dumb1.com/2a04a04a04a09a03/Call-Me-Joker-s-Wild-1-by-Lena-Matthews.pdf
    • http://muicuiu.dumb1.com/4a02a09a02a00a04/Ports-of-Call-by-Jack-Vance.pdf
    • http://muicuiu.dumb1.com/2a02a08a07a03a08/The-Wild-s-Call-Aspect-of-Crow-0-5-by-Jeri-Smith-Ready.pdf
    • http://muicuiu.dumb1.com/4a02a09a00a02a04/Ports-of-Call-amp-Lurulu-by-Jack-Vance.pdf
    • http://muicuiu.dumb1.com/1a02a08a02a03a01/The-Red-One-by-Jack-London.pdf
    • http://muicuiu.dumb1.com/3a07a03a08a09a01/Mickey-Mouse-Color-Sundays-Vol-1-Call-of-the-Wild-by-Floyd-Gottfredson.pdf
    • http://muicuiu.dumb1.com/4a03a01a06a03a01/The-Jacket-by-Jack-London.pdf
    • http://muicuiu.dumb1.com/3a04a08a01a07/The-Sea-Wolf-by-Jack-London.pdf
    • http://muicuiu.dumb1.com/1a00a02a04a05a05a06/War-of-the-Classes-by-Jack-London.pdf

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