Malicious PDF — malware analysis report

Static analysis result for SHA-256 7969b743852166e7…

MALICIOUS

PDF

18.1 KB Created: 2019-08-02 07:36:56 +01:00 Authoring application: mPDF 5.7
MD5: 097a5e4e7fb4c9a0e62713b5a3af663b SHA-1: 32fe33a280f5bed3f7d1c4f131292fde99b5e00a SHA-256: 7969b743852166e7e1df5064c635226b6c125355e55e48aa87b3da8189f9e378
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded links pointing to external PDF files hosted on a domain with a numeric slug structure, indicative of a link farm or SEO spam. The ML classifier also flagged this document as malicious. The primary attack pattern observed is the distribution of numerous links, likely to distribute malware or engage in phishing, rather than direct execution within the PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9788

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/1730735739733734739/Hamann-s-Socratic-Memorabilia-A-Translation-and-Commentary-by-Johann-Georg-Hamann.pdf
    • http://cefasfese.4pu.com/1730735739736739731/Hamann-s-Schriften-Th-Metakritik-ber-Den-Purismum-Der-Reinen-Vernunft-Golgatha-amp-Scheblimini-Fliegender-Brief-an-Niemand-Den-Kundbaren-Briefe-1784-88-Siebenter-Theil-by-Johann-Georg-Hamann.pdf
    • http://cefasfese.4pu.com/7734730730738735/Running-Down-Broadway-by-Mike-Ockrent.pdf
    • http://cefasfese.4pu.com/6732733731730735/My-Regards-To-Broadway-A-Memoir-by-James-Fairfax.pdf
    • http://cefasfese.4pu.com/6732733731736735/Regards-to-Broadway-by-Donald-Henderson-Clarke.pdf
    • http://cefasfese.4pu.com/5730735730/Ink-Skin-Books-1-by-Alice-Broadway.pdf
    • http://cefasfese.4pu.com/1730735739734738734/Hamann-on-Language-amp-Religion-Otm-by-T-German.pdf
    • http://cefasfese.4pu.com/3733731732735733/Tim-on-Broadway-Season-One-Episode-2-by-Rick-Bettencourt.pdf
    • http://cefasfese.4pu.com/1730735739733734735/Hamann-and-the-Tradition-by-Lisa-Marie-Anderson.pdf
    • http://cefasfese.4pu.com/1730735739734734731/The-American-Association-Milwaukee-Brewers-by-Rex-Hamann.pdf
    • http://cefasfese.4pu.com/1730735739734735735/Brad-Pitt-Won-t-Leave-Me-Alone-by-Shannon-Hamann.pdf
    • http://cefasfese.4pu.com/1731734730731730733/Marion-treibt-es-mit-Fl-chtlingen-by-Christine-Hamann.pdf
    • http://cefasfese.4pu.com/1730735739735737731/Minneapolis-Millers-of-the-American-Association-The-by-Rex-Hamann.pdf
    • http://cefasfese.4pu.com/9733730731730735/Anastasia-The-New-Broadway-Musical-by-Lynn-Ahrens.pdf
    • http://cefasfese.4pu.com/1730735739735735739/Leucocyte-Trafficking-The-Role-of-Fucosyltransferases-and-Selectins-by-A-Hamann.pdf
    • http://cefasfese.4pu.com/6730739732736730/Sissi-Elisabeth-Empress-of-Austria-by-Brigitte-Hamann.pdf
    • http://cefasfese.4pu.com/1730735739735735737/BMS-223-Disease-Special-Course-Text-Pack-for-GVSU-by-Hamann.pdf
    • http://cefasfese.4pu.com/6731734734736/Broadway-Lights-Secrets-of-My-Hollywood-Life-5-by-Jen-Calonita.pdf
    • http://cefasfese.4pu.com/1730735739734734732/Extraordinary-Lives-of-Ordinary-Fools-by-Kelli-Hamann.pdf
    • http://cefasfese.4pu.com/1730735733731733734/Idina-Menzel-Broadway-Superstar-by-Christine-Dzidrums.pdf

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