Malicious PDF — malware analysis report

Static analysis result for SHA-256 e765fa6ea4d37aac…

MALICIOUS

PDF

14.1 KB Created: 2019-05-26 17:06:52 +01:00 Authoring application: mPDF 5.7
MD5: c752426b5a991dd0d179c25f906a30aa SHA-1: 4c17a260ddd95b70ab4d87d53838f66ad4c04a21 SHA-256: e765fa6ea4d37aacba5f2a4764fe7b31388486dbb26bdaf808ea6c321b609eb6
90 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF contains a large number of embedded links to external PDF files, primarily hosted on the domain 'cefasfese.4pu.com'. This is indicative of a link farm or SEO poisoning attack, designed to drive traffic to potentially malicious or unwanted content. While the ML classifier flagged it as malicious, the specific intent beyond linking is unclear due to the lack of executable scripts or clear malicious document body content. The heuristic 'PDF_SEO_LINK_FARM' strongly suggests this pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9798

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/2732738736730732/Endless-Forever-by-E-M-Lindsey.pdf
    • http://cefasfese.4pu.com/1732730736730730/Endless-Lies-Murder-in-a-Small-Town-by-Phillip-David-Lindsey.pdf
    • http://cefasfese.4pu.com/6737739731739734/The-Endless-Catacombs-Endless-Quest-22-Dungeons-amp-Dragons-by-Margaret-Weis.pdf
    • http://cefasfese.4pu.com/3734733734737735/Endless-Summer-The-Boys-Next-Door-Endless-Summer-by-Jennifer-Echols.pdf
    • http://cefasfese.4pu.com/3738731737732734/A-Faerie-Fated-Forever-Forever-1-by-Mary-Anne-Graham.pdf
    • http://cefasfese.4pu.com/1731730739731734/A-Faerie-Fated-Forever-Forever-1-by-Mary-Anne-Graham.pdf
    • http://cefasfese.4pu.com/8736733737734735/Soul-Mates-Forever-Forever-3-by-Vicki-Green.pdf
    • http://cefasfese.4pu.com/1731734737732732732/Loving-His-Forever-Forever-Series-2-by-LeAnn-Ashers.pdf
    • http://cefasfese.4pu.com/4730730737737737/Keep-Me-Forever-Forever-Vampires-4-by-Rosemary-Laurey.pdf
    • http://cefasfese.4pu.com/3730731738735731/My-Savior-Forever-Forever-1-by-Vicki-Green.pdf
    • http://cefasfese.4pu.com/8736738732/You-Promised-Me-Forever-Forever-Yours-1-by-Monica-Murphy.pdf
    • http://cefasfese.4pu.com/2730731730739733/Ela-Forever-Waking-Forever-2-by-Heather-McVea.pdf
    • http://cefasfese.4pu.com/4738739738734738/Forever-Changed-Forever-1-by-Mona-Ingram.pdf
    • http://cefasfese.4pu.com/2732730730737732/Waiting-on-Forever-Forever-2-by-Ashley-Wilcox.pdf
    • http://cefasfese.4pu.com/1736731731735736/Endless-Blue-by-Wen-Spencer.pdf
    • http://cefasfese.4pu.com/4730736732731/Endless-Night-by-Agatha-Christie.pdf
    • http://cefasfese.4pu.com/3731734734737732/Endless-Serenity-5-by-Marissa-Farrar.pdf
    • http://cefasfese.4pu.com/2730734737731739/Sold-for-Endless-Rue-by-Madeleine-E-Robins.pdf
    • http://cefasfese.4pu.com/3734736738737734/An-Endless-Serenade-by-Jordan-Lynde.pdf
    • http://cefasfese.4pu.com/3732735732730735/Endless-Night-by-Agatha-Christie.pdf
    • http://cefasfese.4pu.com/8736738732/You-Promis

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