Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4e3058b8506e22e…

MALICIOUS

PDF

18.2 KB Created: 2019-05-01 12:49:38 +01:00 Authoring application: mPDF 5.7
MD5: b896b4cb241e50b74f5222ff9792d976 SHA-1: a559633d193fa009047c277d286e2a4b045472b5 SHA-256: f4e3058b8506e22e7257f3d0c25ca4580900f47331fe7c4d776e98c372ef3eab
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by a machine learning classifier as malicious and contains a large number of embedded external links. The primary heuristic indicates a 'PDF_SEO_LINK_FARM', suggesting the document's purpose is to direct users to a specific domain. While the document body contains many URLs, they are all benign according to the provided labels. The attack pattern is inferred from the heuristic and the structure of the embedded links, which are designed to lead users to external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9931

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/2733736737737733/The-Minotaur-by-Barbara-Vine.pdf
    • http://cefasfese.4pu.com/2733736735731733/No-Night-is-Too-Long-by-Barbara-Vine.pdf
    • http://cefasfese.4pu.com/6731736732738738/The-Birthday-Present-by-Barbara-Vine.pdf
    • http://cefasfese.4pu.com/1736735733734/A-Dark-Adapted-Eye-by-Barbara-Vine.pdf
    • http://cefasfese.4pu.com/7738734733735/The-Chimney-Sweeper-s-Boy-by-Barbara-Vine.pdf
    • http://cefasfese.4pu.com/1735733737734734/The-Blood-Doctor-by-Barbara-Vine.pdf
    • http://cefasfese.4pu.com/2734730734732736/The-Brimstone-Wedding-by-Barbara-Vine.pdf
    • http://cefasfese.4pu.com/2730739732730731/Copper-Beech-Grove-A-Different-Kind-of-Love-by-Barbara-Pintoro.pdf
    • http://cefasfese.4pu.com/2735739736739735/Blood-Vine-Blood-Vine-1-by-Amber-Belldene.pdf
    • http://cefasfese.4pu.com/8732739739730736/A-Kind-of-Romance-A-Kind-of-Stories-2-by-Lane-Hayes.pdf
    • http://cefasfese.4pu.com/3733739736733730/A-Kind-of-Honesty-A-Kind-of-Stories-3-by-Lane-Hayes.pdf
    • http://cefasfese.4pu.com/1739732734732731/A-Kind-of-Truth-A-Kind-of-Stories-1-by-Lane-Hayes.pdf
    • http://cefasfese.4pu.com/1730730734736732739/Albtraum---Tod-eines-Kindes-by-K-J-Weiss.pdf
    • http://cefasfese.4pu.com/1730732739732738731/Die-Erziehung-des-Kindes-Ein-Aufsatz-und-zwei-Vortr-ge-1906-und-1907-aus-GA-34-und-55-by-Cornelius-Bohlen.pdf
    • http://cefasfese.4pu.com/1731731732730732733/Empfindsam-erziehen-Tipps-f-r-die-ersten-10-Lebensjahre-des-hochsensiblen-Kindes-by-Julie-Leuze.pdf
    • http://cefasfese.4pu.com/1731736730739736735/LILA-FLOH-IN-LAVENDEL-Das-R-tsel-eines-stummen-Kindes-by-Inka-Mareila.pdf
    • http://cefasfese.4pu.com/1731738736730734731/Kinder-Der-Angst-Studie-Zum-Anthropologischen-Phanomen-Der-Angst-Im-Historischen-Wandel-Der-Erlebniswelt-Des-Kindes-by-Ferdinand-Bitz.pdf
    • http://cefasfese.4pu.com/9736734732733731/Erorterung-Und-Erlauterung-Der-Frage-OB-Es-Ein-Gewi-Zeichen-Wenn-Eines-Todten-Kindes-Lunge-Im-Wasser-Untersinket-Da-Solches-in-Mutter-Leibe-Gestorben-Sey-by-Johann-Schreyer.pdf
    • http://cefasfese.4pu.com/3739732736735738/Lurk-by-Adam-Vine.pdf
    • http://cefasfese.4pu.com/9738734734732/Jam-on-the-Vine-by-LaShonda-Katrice-Barnett.pdf

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