Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfb2875ffaaa29fa…

MALICIOUS

PDF

16.2 KB Created: 2019-04-30 05:11:37 +01:00 Authoring application: mPDF 5.7
MD5: a8f089a4f764e465102d4219e3e9cb0f SHA-1: 7f7b74a5c87119f0a1740a508330e1c5ec60527d SHA-256: bfb2875ffaaa29fa0aaf41dda916c2bb86900f04fddaa066b46c6fa89ed6a8f9
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF file contains a large number of embedded links to external PDF documents hosted on the domain 'muicuiu.dumb1.com'. This pattern is indicative of a link farm or a redirection scheme designed to lead users to potentially malicious content. The ML classifier also flagged this PDF as malicious with a high probability. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9811

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/5a09a05a07a01/Lucky-Starr-and-the-Oceans-of-Venus-Lucky-Starr-3-by-Isaac-Asimov.pdf
    • http://muicuiu.dumb1.com/1a03a09a00a03a03/David-Starr-Space-Ranger-Lucky-Starr-1-by-Isaac-Asimov.pdf
    • http://muicuiu.dumb1.com/2a05a08a05a03a01/The-Starr-Report-The-Findings-Of-Independent-Counsel-Kenneth-Starr-On-President-Clinton-And-The-Lewinsky-Affair-by-Kenneth-W-Starr.pdf
    • http://muicuiu.dumb1.com/2a05a08a09a00a02/Lucky-Bastard-Lucky-O-Toole-4-by-Deborah-Coonts.pdf
    • http://muicuiu.dumb1.com/4a08a05a05a08a08/Lucky-in-Love-Lucky-Harbor-4-by-Jill-Shalvis.pdf
    • http://muicuiu.dumb1.com/2a08a05a08a04a02/Not-So-Lucky-Lucky-Clover-1-by-RaShelle-Workman.pdf
    • http://muicuiu.dumb1.com/1a07a07a06a08a03/Lucky-Streak-Lucky-2-by-Carly-Phillips.pdf
    • http://muicuiu.dumb1.com/3a02a07a03a00a08/Space-Shuttles-Isaac-Asimov-s-Wonderful-Worlds-of-Science-Fiction-7-by-Isaac-Asimov.pdf
    • http://muicuiu.dumb1.com/1a01a06a03a03a07a09/Isaac-Asimov-Presents-the-Great-SF-Stories-8-1946-by-Isaac-Asimov.pdf
    • http://muicuiu.dumb1.com/6a09a04a06a03a06/Isaac-Asimov-s-Guide-to-Earth-and-Space-by-Isaac-Asimov.pdf
    • http://muicuiu.dumb1.com/7a08a01a03a09a08/The-Best-Science-Fiction-of-Isaac-Asimov-by-Isaac-Asimov.pdf
    • http://muicuiu.dumb1.com/1a02a09a07a06a05/Isaac-Asimov-s-Caliban-Isaac-Asimov-s-Caliban-1-by-Roger-MacBride-Allen.pdf
    • http://muicuiu.dumb1.com/2a09a00a07a04a04/Lucky-Star-1-Lucky-Star-1-by-Kagami-Yoshimizu.pdf
    • http://muicuiu.dumb1.com/9a04a05a07a05a07/Best-of-Asimov-Die-besten-Geschichten-des-ber-hmten-Autors-by-Isaac-Asimov.pdf
    • http://muicuiu.dumb1.com/7a08a01a03a01a06/Asimov-s-Chronology-of-the-World-by-Isaac-Asimov.pdf
    • http://muicuiu.dumb1.com/2a02a09a03a07a04/Nowhere-to-Turn-by-C-J-Starr.pdf
    • http://muicuiu.dumb1.com/1a01a03a01a06a05a03/The-Pilot-and-the-Major-by-D-H-Starr.pdf
    • http://muicuiu.dumb1.com/2a01a06a09a09a07/Our-Little-Secret-by-Starr-Ambrose.pdf
    • http://muicuiu.dumb1.com/9a00a03a03a03a09/Amaryllis-by-Starr-Ockenga.pdf
    • http://muicuiu.dumb1.com/1a01a02a01a06a03a02/Wrestling-With-Desire-by-D-H-Starr.pdf

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