Malicious PDF — malware analysis report

Static analysis result for SHA-256 24dff5e71f3550d8…

MALICIOUS

PDF

16.4 KB Created: 2019-04-30 09:42:34 +01:00 Authoring application: mPDF 5.7
MD5: 0cf103b8fdba69345620f593f9657d59 SHA-1: 53a8ca0a020a4e0d561bc0eeef940a3cc5561aa7 SHA-256: 24dff5e71f3550d884d5fde6f1d707c3369cd484495759d1a07238cb50b7eb6e
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, forming a link farm. This is a common technique used to distribute malicious content or to engage in SEO poisoning. The ML classifier also flagged this PDF as malicious with high confidence. 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/5a09a04a06a04a04/Kierkegaard-A-Very-Short-Introduction-by-Patrick-L-Gardiner.pdf
    • http://muicuiu.dumb1.com/1a01a08a09a08a09a00/Sell-Yourself-Short-An-Introduction-to-Short-Story-Writing-by-Kosmo.pdf
    • http://muicuiu.dumb1.com/6a07a04a09a03a00/Magnetism-A-Very-Short-Introduction-Very-Short-Introductions-317-by-Stephen-J-Blundell.pdf
    • http://muicuiu.dumb1.com/4a01a09a07a06a07/Solid-Gold-Anthology-of-the-Very-Best-Short-Fiction-from-Gold-Dust-by-David-Gardiner.pdf
    • http://muicuiu.dumb1.com/5a09a04a06a03a09/Provocations-Spiritual-Writings-of-Kierkegaard-by-S-ren-Kierkegaard.pdf
    • http://muicuiu.dumb1.com/2a09a02a04a09a08/Introduction-to-Logic-by-Patrick-C-Suppes.pdf
    • http://muicuiu.dumb1.com/3a06a02a06a06a07/A-Concise-Introduction-to-Logic-with-CD-ROM-by-Patrick-J-Hurley.pdf
    • http://muicuiu.dumb1.com/6a02a01a00a02a03/Introduction-Generale-Au-Droit-by-Patrick-Courbe.pdf
    • http://muicuiu.dumb1.com/8a04a00a09a06a01/The-Cambridge-Introduction-to-Francophone-Literature-by-Patrick-Corcoran.pdf
    • http://muicuiu.dumb1.com/5a09a04a07a02a03/The-Prayers-of-Kierkegaard-by-S-ren-Kierkegaard.pdf
    • http://muicuiu.dumb1.com/5a09a00a08a04a01/The-Egoist-A-Screenplay-Adapted-For-Television-By-John-Gardiner-by-John-Gardiner.pdf
    • http://muicuiu.dumb1.com/1a01a00a08a07a03a07/Schopenhauer-A-Very-Short-Introduction-by-Christopher-Janaway.pdf
    • http://muicuiu.dumb1.com/2a05a04a08a05a09/Lincoln-A-Very-Short-Introduction-by-Allen-C-Guelzo.pdf
    • http://muicuiu.dumb1.com/7a03a03a01a05a08/Diaspora-A-Very-Short-Introduction-by-Kevin-Kenny.pdf
    • http://muicuiu.dumb1.com/9a01a02a00a00a01/The-Elements-A-Very-Short-Introduction-by-Philip-Ball.pdf
    • http://muicuiu.dumb1.com/9a01a07a03a03a08/Neoliberalism-A-Very-Short-Introduction-by-Manfred-B-Steger.pdf
    • http://muicuiu.dumb1.com/3a09a04a04a05a03/Marx-A-Very-Short-Introduction-by-Peter-Singer.pdf
    • http://muicuiu.dumb1.com/2a03a09a04a05a08/Plague-A-Very-Short-Introduction-by-Paul-Slack.pdf
    • http://muicuiu.dumb1.com/2a09a00a04a08a01/Contemporary-Art-A-Very-Short-Introduction-by-Julian-Stallabrass.pdf
    • http://muicuiu.dumb1.com/1a01a09a00a04a07a07/Darwin-A-Very-Short-Introduction-by-Jonathan-Howard.pdf
    • http://muicuiu.dumb1.com/8a04a00a09a0

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