Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1708baf35b925ea…

MALICIOUS

PDF

13.0 KB Created: 2019-04-30 05:09:07 +01:00 Authoring application: mPDF 5.7
MD5: 0b843a7f9808365692cde26f127377af SHA-1: 9773b8d4ab33fdabb3b5b159ce922a82171bf001 SHA-256: b1708baf35b925ea05f77c3694e2de88ffb8d1de1caedfe6ef61421ea038e3c2
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO poisoning or to distribute malicious content. The ML classifier also flagged this PDF as malicious. No scripts were extracted from this sample. The primary attack pattern involves directing users to a domain hosting numerous book-themed PDFs.

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/1a09a01a04a08a00/Angus-and-the-Cat-by-Marjorie-Flack.pdf
    • http://muicuiu.dumb1.com/1a08a00a07a03a06/Angus-and-the-Ducks-by-Marjorie-Flack.pdf
    • http://muicuiu.dumb1.com/6a03a06a08a09a00/The-Story-about-Ping-With-CD-Audio-by-Marjorie-Flack.pdf
    • http://muicuiu.dumb1.com/9a00a07a01a01a02/Sophie-s-War-The-Journal-Of-Anna-Sophie-Franziska-Guenther-by-Janice-Shefelman.pdf
    • http://muicuiu.dumb1.com/4a07a09a00a01a09/Sophie-and-the-Wax-Doll-Bilingual-Sophie-s-Misfortunes-1-by-Comtesse-de-S-gur.pdf
    • http://muicuiu.dumb1.com/1a01a08a02a09a06a04/Sophie-the-Chatterbox-Sophie-Miller-3-by-Lara-Bergen.pdf
    • http://muicuiu.dumb1.com/2a07a05a06a09a09/Sophie-the-Awesome-Sophie-1-by-Lara-Bergen.pdf
    • http://muicuiu.dumb1.com/6a01a09a02a01a09/Sophie-s-World-Sophie-1-by-Nancy-N-Rue.pdf
    • http://muicuiu.dumb1.com/2a07a07a03a09a06/Sophie-s-Daughters-Trilogy-Sophie-s-Daughters-1-3-by-Mary-Connealy.pdf
    • http://muicuiu.dumb1.com/6a07a02a07a06a05/Sophie-Calle-Voir-la-Mer-by-Sophie-Calle.pdf
    • http://muicuiu.dumb1.com/1a00a06a06a00a09/Sophie-s-Fate-Sophie-s-Fate-1-by-C-S-Minsky.pdf
    • http://muicuiu.dumb1.com/8a05a06a05a05a03/I-Owe-You-One-by-Sophie-Kinsella.pdf
    • http://muicuiu.dumb1.com/5a04a04a07a08a07/A-Fada-do-Lar-by-Sophie-Kinsella.pdf
    • http://muicuiu.dumb1.com/9a09a09a00a00a07/The-Dead-Lie-Down-by-Sophie-Hannah.pdf
    • http://muicuiu.dumb1.com/1a02a05a07a03a07/I-ve-Got-Your-Number-by-Sophie-Kinsella.pdf
    • http://muicuiu.dumb1.com/2a00a05a09a07a03/Playing-the-Field-by-Sophie-Oak.pdf
    • http://muicuiu.dumb1.com/2a01a04a00a03/The-Unfortunates-by-Sophie-McManus.pdf
    • http://muicuiu.dumb1.com/8a01a05a06/Out-of-the-Blue-by-Sophie-Cameron.pdf
    • http://muicuiu.dumb1.com/1a05a08a00a00a06/The-Guilty-One-by-Sophie-Littlefield.pdf
    • http://muicuiu.dumb1.com/1a09a04a07a05a04/Infected-by-Sophie-Littlefield.pdf

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