Malicious PDF — malware analysis report

Static analysis result for SHA-256 de2eb2e5cdc6ef27…

MALICIOUS

PDF

17.9 KB Created: 2019-11-03 20:32:40 +00:00 Authoring application: mPDF 5.7
MD5: aa9eaf4084eb72cd0b2b9c4c9c85b78d SHA-1: e5ceb361de4136ecc73b91a5b54d014fb288e618 SHA-256: de2eb2e5cdc6ef274baeba8fe1a3d0cb96b838007355c0b98c7d6a45b57a18be
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, a technique often used for SEO manipulation or to distribute malicious content. The ML classifier strongly indicated maliciousness. While the URLs themselves are currently marked as benign, the sheer volume and the PDF_SEO_LINK_FARM heuristic suggest a malicious intent to redirect users to potentially harmful sites. No scripts were extracted from this sample.

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/1730733730730733734/Kalter-Zorn-Thriller-by-Ilja-Albrecht.pdf
    • http://cefasfese.4pu.com/1731735731739738737/Schlaglichter-Preussen-Westeuropa-Festschrift-Fur-Ilja-Mieck-Zum-65-Geburtstag-by-Ilja-Mieck.pdf
    • http://cefasfese.4pu.com/9732736735733737/Albrecht-s-Foundation-Concepts-The-Albrecht-Papers-Vol-I-by-William-A-Albrecht.pdf
    • http://cefasfese.4pu.com/1737734735737735/Loving-Zorn-Zorn-Warriors-1-2-by-Laurann-Dohner.pdf
    • http://cefasfese.4pu.com/9731735737733737/Kalter-Hauch-Todeshauch-Blutiger-Hauch-Kalter-Hauch-3-by-Sieglinde-Breitschwerdt.pdf
    • http://cefasfese.4pu.com/9732736734736730/The-Albrecht-Papers-by-William-A-Albrecht.pdf
    • http://cefasfese.4pu.com/9732736734734739/The-Complete-Engravings-Etchings-and-Drypoints-of-Albrecht-D-rer-by-Albrecht-D-rer.pdf
    • http://cefasfese.4pu.com/1730739732737733739/Walter-Albrecht-pr-sentiert-Bilder-Buch-VW-K-fer-by-Walter-Albrecht.pdf
    • http://cefasfese.4pu.com/1730739732735738731/Walter-Albrecht-pr-sentiert-Klassische-Citroen-by-Walter-Albrecht.pdf
    • http://cefasfese.4pu.com/6734733736735733/de-Zin-Van-Het-Toeval-by-Ilja-Maso.pdf
    • http://cefasfese.4pu.com/9732732738733733/Eiskalt-in-Moskau-Thriller-Cori-Stein-Thriller-3-by-Ingrid-Glomp.pdf
    • http://cefasfese.4pu.com/1731731739730733736/Gef-hrliche-Tr-ume-Romantik-Thriller-Eine-wundersch-ne-Liebesgeschichte-verbunden-mit-einem-spannenden-Thriller-by-Anne-Alexander.pdf
    • http://cefasfese.4pu.com/1730738739736737734/Rohstoff-der-Keramikherstellung-T-pfern---Materiallehre-in-Arch-ologie-by-Ilja-Saev.pdf
    • http://cefasfese.4pu.com/1730730735738735735/Hei-e-Liebe---Kalter-Tod-by-Pia-Hepke.pdf
    • http://cefasfese.4pu.com/1730732739739734735/Arts-And-Crafts-Of-Syria-by-Johannes-Kalter.pdf
    • http://cefasfese.4pu.com/1730732739737738737/Complete-Book-of-Mash-by-Suzy-Kalter.pdf
    • http://cefasfese.4pu.com/1730733730730734731/The-World-s-Best-String-Games-by-Joanmarie-Kalter.pdf
    • http://cefasfese.4pu.com/1730733730731733732/A-cold-wind-Ein-kalter-Hauch-by-Mark-Caplan.pdf
    • http://cefasfese.4pu.com/1730739732737734737/Walter-Albrecht-pr-sentiert-VW-Bus-T2-by-Walter-Albrecht.pdf
    • http://cefasfese.4pu.com/1731735732730737737/Thriller-Writing-A-creative-writing-and-self-publishing-guide-for-aspiring-thriller-novelists-by-Ash-Greenslade.pdf