Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f13c4c3f26fd1a9…

MALICIOUS

PDF

18.2 KB Created: 2019-04-30 04:23:56 +01:00 Authoring application: mPDF 5.7
MD5: e38ca280d997891ea4b5dfb2d6bddc15 SHA-1: 48c57f94d30d1bf253378b3a3c96da1c438d80c5 SHA-256: 4f13c4c3f26fd1a987beb69814d1d861874067be8c0744936d8ddcb932c1b28e
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF contains a large number of embedded URLs, forming a link farm. The heuristic 'PDF_SEO_LINK_FARM' indicates this is a technique to distribute content or potentially lead users to malicious sites. While the specific URLs extracted were classified as benign, the sheer volume and structure suggest a malicious intent, likely to drive traffic or distribute further payloads. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9931

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.du
    • http://muicuiu.dumb1.com/9a00a08a06a05a00/Marianne-Williamson-on-Work-Career-by-Marianne-Williamson.pdf
    • http://muicuiu.dumb1.com/1a01a07a03a02a02a03/Marianne-Williamson-on-Death-Dying-by-Marianne-Williamson.pdf
    • http://muicuiu.dumb1.com/1a01a07a03a02a03a01/Marianne-Williamson-on-Dealing-With-Anger-by-Marianne-Williamson.pdf
    • http://muicuiu.dumb1.com/1a01a07a03a00a09a03/Marianne-Williamson-On-Commitment-by-Marianne-Williamson.pdf
    • http://muicuiu.dumb1.com/9a00a08a06a05a02/Marianne-Williamson-on-Intimacy-by-Marianne-Williamson.pdf
    • http://muicuiu.dumb1.com/3a06a03a00a07a05/The-Age-of-Miracles-Embracing-the-New-Midlife-by-Marianne-Williamson.pdf
    • http://muicuiu.dumb1.com/3a07a03a01a08a06/Return-to-Love-Reflections-on-the-Principles-of-a-Course-in-Miracles-by-Marianne-Williamson.pdf
    • http://muicuiu.dumb1.com/9a00a08a05a01a05/Everyday-Grace-Having-Hope-Finding-Forgiveness-And-Making-Miracles-by-Marianne-Williamson.pdf
    • http://muicuiu.dumb1.com/1a01a03a01a08a07a06/Das-Gesetz-des-g-ttlichen-Ausgleichs-Ein-spiritueller-Kurs-f-r-ein-reicheres-Leben-by-Marianne-Williamson.pdf
    • http://muicuiu.dumb1.com/9a00a08a03a07a01/Marianne-the-Matchbox-and-the-Malachite-Mouse-Marianne-3-by-Sheri-S-Tepper.pdf
    • http://muicuiu.dumb1.com/9a00a08a04a07a00/Marianne-and-the-Crown-of-Fire-Marianne-7-by-Juliette-Benzoni.pdf
    • http://muicuiu.dumb1.com/7a04a05a06a03a05/A-Quiver-With-Significance-Marianne-Moore-1932-1936-by-Marianne-Moore.pdf
    • http://muicuiu.dumb1.com/1a01a06a06a05a09a00/J-N-Williamson-s-Masques-2-by-J-N-Williamson.pdf
    • http://muicuiu.dumb1.com/9a08a04a02a05/Miss-Marianne-Woods-And-Miss-Jane-Pirie-Against-Dame-Helen-Cumming-Gordon-by-Marianne-Woods.pdf
    • http://muicuiu.dumb1.com/4a02a05a08a01a05/Ghost-by-J-N-Williamson.pdf
    • http://muicuiu.dumb1.com/1a01a06a06a07a03a02/Playmates-by-J-N-Williamson.pdf
    • http://muicuiu.dumb1.com/5a08a03a06a06a00/The-Best-of-Masques-by-J-N-Williamson.pdf
    • http://muicuiu.dumb1.com/1a01a06a06a06a09a06/The-Haunt-by-J-N-Williamson.pdf
    • http://muicuiu.dumb1.com/3a03a01a04a07a09/Falling-For-You-by-Matthias-Williamson.pdf
    • http://muicuiu.dumb1.com/7a08a09a07a02/The-Art-of-Being-Normal-by-Lisa-Williamson.pdf

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