Malicious PDF — malware analysis report

Static analysis result for SHA-256 7de9df076579e391…

MALICIOUS

PDF

16.7 KB Created: 2019-05-02 01:15:15 +01:00 Authoring application: mPDF 5.7
MD5: ed515e91abd41aa44dfa6ff674d41ff2 SHA-1: 66b89b2b8bd3fa907cc80bba5e3d4cc0c4262ae1 SHA-256: 7de9df076579e39126a7b282c67adc05591460b0bf85cfc1ce686564546adc5f
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded URLs, identified as a link farm. While the ML classifier strongly indicates maliciousness, the specific intent beyond link distribution is unclear as no scripts were extracted and the document body is heavily obfuscated. The primary attack pattern appears to be the distribution of numerous links, likely to a malicious website or for SEO poisoning.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9925

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/1a01a06a09a08a01a04/No-Laughing-Matter-The-Life-and-Times-of-Flann-O-Brien-by-Anthony-Cronin.pdf
    • http://muicuiu.dumb1.com/5a02a05a09a05a03/Life-of-Riley-Tails-of-a-Treasured-Life-by-Chris-Rosinski.pdf
    • http://muicuiu.dumb1.com/3a04a00a06a08a08/Cronin-s-Key-Cronin-s-Key-1-by-N-R-Walker.pdf
    • http://muicuiu.dumb1.com/1a08a04a06a00a01/Cronin-s-Key-Cronin-s-Key-1-by-N-R-Walker.pdf
    • http://muicuiu.dumb1.com/8a01a09a04a03a07/Life-of-Col-J-F-H-Claiborne-by-Franklin-Lafayette-Riley.pdf
    • http://muicuiu.dumb1.com/2a07a05a09a02a05/The-Enchanted-Life-of-Adam-Hope-by-Rhonda-Riley.pdf
    • http://muicuiu.dumb1.com/3a05a08a08a02a02/The-Enchanted-Life-of-Adam-Hope-by-Rhonda-Riley.pdf
    • http://muicuiu.dumb1.com/5a00a00a04a05a06/My-Not-So-Simple-Life-Rachel-Riley-4-by-Joanna-Nadin.pdf
    • http://muicuiu.dumb1.com/7a04a01a03a03/The-Short-and-Incredibly-Happy-Life-of-Riley-by-Colin-Thompson.pdf
    • http://muicuiu.dumb1.com/1a03a09a02a01a08/Appetite-for-Life-The-Biography-of-Julia-Child-by-No-l-Riley-Fitch.pdf
    • http://muicuiu.dumb1.com/2a05a07a05a02a07/Recalled-by-Life-by-Anthony-J-Sattilaro.pdf
    • http://muicuiu.dumb1.com/8a01a09a01a01a06/The-Life-Of-Cicero-by-Anthony-Trollope.pdf
    • http://muicuiu.dumb1.com/5a05a02a06a06a06/The-Life-of-St-Anthony-by-Athanasius-of-Alexandria.pdf
    • http://muicuiu.dumb1.com/4a02a05a05a02a08/The-Way-to-Love-Meditations-for-Life-by-Anthony-de-Mello.pdf
    • http://muicuiu.dumb1.com/1a00a09a00a01a02a05/Life-in-the-World-Unseen-by-Anthony-Borgia.pdf
    • http://muicuiu.dumb1.com/5a02a03a05a08/This-Side-of-Freedom-Life-After-Clemency-by-Anthony-Papa.pdf
    • http://muicuiu.dumb1.com/5a06a01a04a09/The-Sun-Does-Shine-How-I-Found-Life-and-Freedom-on-Death-Row-by-Anthony-Ray-Hinton.pdf
    • http://muicuiu.dumb1.com/7a05a08a04/The-Sun-Does-Shine-How-I-Found-Life-and-Freedom-on-Death-Row-by-Anthony-Ray-Hinton.pdf
    • http://muicuiu.dumb1.com/1a02a06a03a04a08/Make-It-Happen-Traveling-the-Road-of-Life-by-Anthony-Taylor-Sr-.pdf
    • http://muicuiu.dumb1.com/6a01a05a09a00a00/The-As-If-Philosophy-A-Jarhead-s-Guide-to-an-Exceptional-Life-by-Anthony-Chapa.pdf
    • http://muicuiu.dumb1.com/8a01a09a01a01a06/T

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