Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4d162a450e8e404…

MALICIOUS

PDF

20.3 KB Created: 2019-05-02 05:30:10 +01:00 Authoring application: mPDF 5.7
MD5: b864d2fecefcfa8a9fa173985ba520e5 SHA-1: f8ba5279877319f0fb9d7b08738a550e1ed918e5 SHA-256: e4d162a450e8e404521a41fb923e43c92672fb0dd5a37a1ae599586902521548
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, as indicated by the PDF_SEO_LINK_FARM heuristic. While the URLs themselves are currently classified as benign, the sheer volume and the nature of the heuristic suggest a malicious intent, possibly for SEO spam or to distribute further malicious content. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9922

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/2730733732739735/The-Italian-s-Wife-by-Lynne-Graham.pdf
    • http://cefasfese.4pu.com/2730732739730730/The-Veranchetti-Marriage-by-Lynne-Graham.pdf
    • http://cefasfese.4pu.com/2730732739733734/Bittersweet-Passion-by-Lynne-Graham.pdf
    • http://cefasfese.4pu.com/2730733731734732/An-Insatiable-Passion-by-Lynne-Graham.pdf
    • http://cefasfese.4pu.com/2730732739731739/Crime-of-Passion-by-Lynne-Graham.pdf
    • http://cefasfese.4pu.com/1732733736731733/The-Petrakos-Bride-by-Lynne-Graham.pdf
    • http://cefasfese.4pu.com/4737738731736738/Bond-of-Hatred-by-Lynne-Graham.pdf
    • http://cefasfese.4pu.com/2730733730731732/The-Arabian-Mistress-by-Lynne-Graham.pdf
    • http://cefasfese.4pu.com/2730733730735733/Damiano-s-Return-by-Lynne-Graham.pdf
    • http://cefasfese.4pu.com/2730732739730736/The-Secret-Wife-by-Lynne-Graham.pdf
    • http://cefasfese.4pu.com/2730733731737734/The-Sheikh-s-Innocent-Bride-by-Lynne-Graham.pdf
    • http://cefasfese.4pu.com/7732738739733732/The-Greek-Demands-His-Heir-Notorious-Greeks-1-by-Lynne-Graham.pdf
    • http://cefasfese.4pu.com/3737734737732732/The-Banker-s-Convenient-Wife-Brides-of-L-Amour-3-by-Lynne-Graham.pdf
    • http://cefasfese.4pu.com/3735738733739731/The-L-Shaped-Room-Jane-Graham-1-by-Lynne-Reid-Banks.pdf
    • http://cefasfese.4pu.com/4738731730738736/A-Convenient-Arrangement-The-Italian-s-Wife-The-Spanish-Groom-by-Lynne-Graham.pdf
    • http://cefasfese.4pu.com/1732733734737737/Greek-Tycoon-Inexperienced-Mistress-Pregnant-Brides-3-by-Lynne-Graham.pdf
    • http://cefasfese.4pu.com/3732735738733732/The-Italian-Billionaire-s-Pregnant-Bride-The-Rich-the-Ruthless-and-the-Really-Handsome-3-by-Lynne-Graham.pdf
    • http://cefasfese.4pu.com/4732738732739732/Mistresses-The-Italian-s-Inexperienced-Mistress-Emerald-Mistress-Mistress-Bought-and-Paid-For-by-Lynne-Graham.pdf
    • http://cefasfese.4pu.com/1731737739731733730/Briefe-Eines-Dollar-Koenigs-an-Seinen-Sohn-Diese-Briefe-Schrieb-Der-Chef-Der-Schweinefleisch-Versand-Grosshandlung-Graham-amp-Co-in-Chicago-Herr-John-Graham-an-Der-Boerse-Unter-Dem-Spitznamen-der-Alte-Schweine-Graham-Bekannt-and-Seinen-Sohn-Pierrepon-by-George-Horace-Lorimer.pdf
    • http://cefasfese.4pu.com/5734731737731734/Baby-led-Weaning-Helping-Your-Baby-to-Love-Good-Food-by-Gill-Rapley.pdf
    • http://cefasfese.4pu.com/2730733731737734/The-Sheikh-s-Innocent-Bride-by-Lynne-Gr

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