Malicious PDF — malware analysis report

Static analysis result for SHA-256 174df840a5421ee4…

MALICIOUS

PDF

16.1 KB Created: 2019-05-02 17:49:08 +01:00 Authoring application: mPDF 5.7
MD5: e274ad01cde4b176fc81b65978645738 SHA-1: cb703728196cea779cfeb112e7653930ab0e6163 SHA-256: 174df840a5421ee4502a17a000ca06f01d0d9523052e7b46a0ffd764c6012908
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs, identified as a link farm. The ML classifier also flagged the document as malicious. The primary attack pattern appears to be SEO manipulation or directing users to potentially malicious content hosted at the numerous extracted URLs.

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://cefasfese.4pu.com/1731730736730731730/Trivia-The-Time-Traveler-s-Wife-by-Audrey-Niffenegger-Trivia-On-Books-by-Trivion-Books.pdf
    • http://cefasfese.4pu.com/8732736739733730/Farmer-Phil-s-Permaculture-by-Phil-M-Williams.pdf
    • http://cefasfese.4pu.com/1731739736738738731/Superstars-Trivia-Facts-and-Quizzes-Cool-Facts-amp-Trivia-by-Superstars-.pdf
    • http://cefasfese.4pu.com/1730736734739736/The-Boneshaker-by-Kate-Milford.pdf
    • http://cefasfese.4pu.com/4731730736732735/Fighting-Out-of-New-Milford-USA-Zombie-2-by-G-B-Hope.pdf
    • http://cefasfese.4pu.com/2734733737731732/The-Broken-Lands-by-Kate-Milford.pdf
    • http://cefasfese.4pu.com/4739731736735736/Greenglass-House-by-Kate-Milford.pdf
    • http://cefasfese.4pu.com/3731735734739730/The-Left-Handed-Fate-by-Kate-Milford.pdf
    • http://cefasfese.4pu.com/8734736734731735/The-Christmas-Extravaganza-A-Bark-Story-by-Courtney-Williamson-Milford.pdf
    • http://cefasfese.4pu.com/9733732739732735/Lightning-from-a-clear-sky-Tolkien-the-Trilogy-and-the-Silmarillion-The-Milford-series-by-Richard-Mathews.pdf
    • http://cefasfese.4pu.com/8738733731731732/The-Narnia-Trivia-Book-by-C-S-Lewis.pdf
    • http://cefasfese.4pu.com/1730730735733735731/Delaware-by-Jeanne-D-Nutter.pdf
    • http://cefasfese.4pu.com/2738735732737738/Amazing-Dog-Facts-and-Trivia-by-Ryan-O-39-Meara.pdf
    • http://cefasfese.4pu.com/8733734734732/Labour-Day-Origin-Meaning-and-Trivia-by-Francis-Okumu.pdf
    • http://cefasfese.4pu.com/2732731733736739/Cat-Pies-Feline-Historical-Trivia-by-Grace-Elliot.pdf
    • http://cefasfese.4pu.com/1730730735733731735/History-of-Delaware-by-John-A-Munroe.pdf
    • http://cefasfese.4pu.com/3734732731735730/Tolkien-Trivia-A-Middle-Earth-Miscellany-by-William-C-MacKay.pdf
    • http://cefasfese.4pu.com/2736737737735735/Killer-Alex-Delaware-29-by-Jonathan-Kellerman.pdf
    • http://cefasfese.4pu.com/1730730735731739737/The-Matchmakers-Delaware-Americana-8-by-Janet-Dailey.pdf
    • http://cefasfese.4pu.com/1730730735732737733/Frommer-s-Maryland-amp-Delaware-by-Mary-K-Tilghman.pdf

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