Malicious PDF — malware analysis report

Static analysis result for SHA-256 9614310634370b2c…

MALICIOUS

PDF

17.4 KB Created: 2019-11-03 20:32:43 +00:00 Authoring application: mPDF 5.7
MD5: eca9e960590cf7b4a551c0bdf87db4a1 SHA-1: 1d3e8e4c921f5a8c6c37088f1079881c3b83c8b0 SHA-256: 9614310634370b2c560513becab97a90548d9d72d3fb8370550cd68e7072fb8f
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO poisoning or to distribute malicious content. The ML classifier also flagged this PDF as malicious. No scripts were extracted from this sample, and the document body contained mostly garbled text and URLs. The primary attack pattern observed is the distribution of a link farm designed to redirect users to potentially harmful content.

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/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/8736736738732735/Luc---In-den-Wellen-by-Bj-rn-Kiehne.pdf
    • http://cefasfese.4pu.com/8736736733732739/Ein-Grab-in-den-Wellen-Roman-by-Abby-Geni.pdf
    • http://cefasfese.4pu.com/8736736735738738/Das-Haus-das-in-den-Wellen-verschwand-by-Lucy-Clarke.pdf
    • http://cefasfese.4pu.com/1731735731735736736/Wellen-Der-Verfolgung-In-Der-sterreichischen-Geschichte-by-Erich-Zollner.pdf
    • http://cefasfese.4pu.com/9733736736734734/Komm-wir-gucken-Wasser-Beim-Spaziergang-Wellen-und-Str-mungen-entdecken-by-Mirjam-S-Gle-mer.pdf
    • http://cefasfese.4pu.com/1730731733737731732/Erdbebenverhalten-Schwimmend-Gelagerter-Balkenbrucken-Bei-Berucksichtigung-Der-Boden-Struktur-Interaktion-Und-Der-Horizontal-Wandernden-Wellen-by-D-R-Somaini.pdf
    • http://cefasfese.4pu.com/1730737738735739734/The-Big-Shot-by-Jutta-Mahlke.pdf
    • http://cefasfese.4pu.com/9734731733737738/Beyond-the-Station-Lies-the-Sea-by-Jutta-Richter.pdf
    • http://cefasfese.4pu.com/1730738736731732730/Ouray---Ruf-der-Ahnen-by-Jutta-W-lk.pdf
    • http://cefasfese.4pu.com/1730737738735739733/Poacher---Wilderer-by-Jutta-Mahlke.pdf
    • http://cefasfese.4pu.com/6735735734737733/Der-Spleen-Von-Berlin-by-Jutta-Voigt.pdf
    • http://cefasfese.4pu.com/9734731733737732/The-Queen-of-Colors-by-Jutta-Bauer.pdf
    • http://cefasfese.4pu.com/1731738739731734735/Voodoo---Ich-k-mpfe-um-dich-by-Jutta-W-lk.pdf
    • http://cefasfese.4pu.com/9739731730738737/Les-huiles-essentielles-f-minines-by-Jutta-Lenze.pdf
    • http://cefasfese.4pu.com/9734731733736737/Jutta-Koether-by-Iris-Muller-Westermann.pdf
    • http://cefasfese.4pu.com/1730737738737732730/Sperrzone-Eine-Kurzgeschichte-by-Jutta-Mahlke.pdf
    • http://cefasfese.4pu.com/8736731733739731/Angst-by-S-A-Williams.pdf
    • http://cefasfese.4pu.com/1731736730734732733/Resilienz-Innere-St-rke-f-r-F-hrungskr-fte-by-Jutta-Heller.pdf
    • http://cefasfese.4pu.com/1730735730739734735/Festung-Guerney-3-1-3-2-Pt-1-Fortress-Guernsey-by-Jutta-Schettler.pdf
    • http://cefasfese.4pu.com/1730731733737731732/Erdbebenverhalten-Schwimmend-Gelagerter-Balkenbrucken-Bei-Berucksichtigung-Der-Boden-Struktur-Interakt

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