Malicious PDF — malware analysis report

Static analysis result for SHA-256 40a451587d8a74f5…

MALICIOUS

PDF

16.3 KB Created: 2019-04-30 02:51:08 +01:00 Authoring application: mPDF 5.7
MD5: dd5333c1b921b641de670f67258cffee SHA-1: bb43d3beeb09195a904c8eb935250cf38e8652b0 SHA-256: 40a451587d8a74f5ad740cbafcbe99385003598822d040ca2f48293298529e1e
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO manipulation or to distribute further malicious content. 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/8a05a02a09a06a08/Nikki-and-Deja-Wedding-Drama-Nikki-and-Deja-Book-Five-by-Karen-English.pdf
    • http://muicuiu.dumb1.com/8a05a02a09a06a00/Nikki-and-Deja-Birthday-Blues-Nikki-and-Deja-Book-Two-by-Karen-English.pdf
    • http://muicuiu.dumb1.com/4a00a07a09a09a08/13-D-j-Vu-An-Anthology-Of-Horror-And-Dark-Fiction-Thirteen-Series-Book-2-by-Bradon-Nave.pdf
    • http://muicuiu.dumb1.com/4a06a06a04a04a00/Double-Take-Karen-Brain-s-Olympic-Journey-by-Nikki-Tate.pdf
    • http://muicuiu.dumb1.com/6a09a02a02a04a06/Nikki-Book-11-by-Melun-Stage.pdf
    • http://muicuiu.dumb1.com/1a05a06a07a04a06/Nikki-Giovanni-Poetry-Collection-by-Nikki-Giovanni.pdf
    • http://muicuiu.dumb1.com/2a08a00a07a07a00/Chasing-Nikki-Chasing-Nikki-1-by-Lacey-Weatherford.pdf
    • http://muicuiu.dumb1.com/4a05a03a01a01a04/The-Deja-Vu-Experiment-by-J-G-Renato.pdf
    • http://muicuiu.dumb1.com/7a00a09a09a00a04/Deja-Who-Insighter-1-by-MaryJanice-Davidson.pdf
    • http://muicuiu.dumb1.com/8a01a05a02a07a08/Deja-Vu-Titan-7-5-by-Cristin-Harber.pdf
    • http://muicuiu.dumb1.com/2a04a00a07a05/Deja-Brew-by-Taneka-Stotts.pdf
    • http://muicuiu.dumb1.com/3a00a05a00a04a07/Deja-Vu-Sisterhood-19-by-Fern-Michaels.pdf
    • http://muicuiu.dumb1.com/3a08a07a06a04a08/Deja-New-Insighter-2-by-MaryJanice-Davidson.pdf
    • http://muicuiu.dumb1.com/3a02a03a06a02a02/Deja-Vu-Bride-by-Debra-Ullrick.pdf
    • http://muicuiu.dumb1.com/8a05a02a08a07a01/Murder-Deja-Vu-by-Polly-Iyer.pdf
    • http://muicuiu.dumb1.com/8a05a02a09a07a00/Deja-Voodoo-by-Leslie-Brown.pdf
    • http://muicuiu.dumb1.com/8a05a02a09a07a08/Then-There-Was-X-Deja-Series-by-Tajana-Sutton.pdf
    • http://muicuiu.dumb1.com/5a03a01a03a08a01/The-Explainer-From-Deja-Vu-To-Why-The-Sky-Is-Blue-And-Other-Conundrums-by-The-Conversation.pdf
    • http://muicuiu.dumb1.com/8a05a03a00a07a00/Rich-Or-Famous-Part-2-by-Deja-King.pdf
    • http://muicuiu.dumb1.com/8a05a02a08a09a09/Stackin-Paper-2-Genesis-Payback-by-Deja-King.pdf
    • http://muicuiu.dumb1.com/2a08a00a07a07a00/Chasi

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