Malicious PDF — malware analysis report

Static analysis result for SHA-256 efd16e8437b0ccd7…

MALICIOUS

PDF

17.4 KB Created: 2019-11-07 22:30:01 +00:00 Authoring application: mPDF 5.7
MD5: 28c4aecaab9da0bb8aaffef45e7f8ed9 SHA-1: d48bcc3f9022c8d83db4e2de9292bdec693a72b3 SHA-256: efd16e8437b0ccd79515dc88ffc3dee3400868266110279e4084e9d7a12950aa
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, forming a link farm. The ML classifier also flagged this PDF as malicious. The primary attack pattern appears to be directing users to a multitude of external websites, likely for SEO manipulation or to host further malicious content. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9789

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/8734732739735737/111-Orte-in-Essen-die-man-gesehen-haben-muss-111-Orte-by-Fabian-Pasalk.pdf
    • http://cefasfese.4pu.com/8734732739735738/111-Orte-in-Basel-die-man-gesehen-haben-muss-111-Orte-by-Mercedes-Korzeniowski-Kneule.pdf
    • http://cefasfese.4pu.com/8734732739735731/111-Orte-in-Istrien-die-man-gesehen-haben-muss-111-Orte-by-Gerd-Wolfgang-Sievers.pdf
    • http://cefasfese.4pu.com/8734732739734738/111-Orte-in-Darmstadt-die-man-gesehen-haben-muss-111-Orte-by-Sonja-Morawietz.pdf
    • http://cefasfese.4pu.com/8734732739735736/111-Orte-in-Kassel-die-man-gesehen-haben-muss-111-Orte-by-Dietmar-Hoos.pdf
    • http://cefasfese.4pu.com/8734732737737739/111-Orte-in-M-nchen-die-man-gesehen-haben-muss-by-R-diger-Liedtke.pdf
    • http://cefasfese.4pu.com/8734732737733739/111-Orte-in-Wien-die-man-gesehen-haben-muss-by-Peter-Eickhoff.pdf
    • http://cefasfese.4pu.com/8734732738737731/111-Orte-in-Amsterdam-die-man-gesehen-haben-muss-by-Thomas-Fuchs.pdf
    • http://cefasfese.4pu.com/8734732739736732/111-Orte-in-Tirol-die-man-gesehen-haben-mu-111-Orte-by-Susanne-Gurschler.pdf
    • http://cefasfese.4pu.com/8734732739736730/111-Orte-an-der-Mecklenburgischen-Seenplatte-die-man-gesehen-111-Orte-by-Jana-J-r-.pdf
    • http://cefasfese.4pu.com/8734732737737730/Goethe-Museen-Orte-Reiserouten-by-Georg-Schwedt.pdf
    • http://cefasfese.4pu.com/9737737732739737/Die-Ausgrabungen-Am-Orte-Des-Haupttempels-in-Mexico-by-Eduard-Seler.pdf
    • http://cefasfese.4pu.com/8734732737738730/Orte-der-Liebe-Isles-of-Love-by-Barbara-Krohn.pdf
    • http://cefasfese.4pu.com/1730737730735730736/111-Orte-in-M-nchen-die-Geschichte-erz-hlen-by-R-diger-Liedtke.pdf
    • http://cefasfese.4pu.com/1731733731730738736/Phantastische-Orte-Exkursionen-in-die-Vergangenheit-by-Frank-Grondkowski.pdf
    • http://cefasfese.4pu.com/1730731736731737731/Der-Bodensee-101-Orte-zum-Verweilen-und-Entdecken-by-Patrick-Brauns.pdf
    • http://cefasfese.4pu.com/1731731736731731737/Traumhafte-Urlaubsziele-Die-10-sch-nsten-Reiseziele-die-Sie-gesehen-haben-m-ssen-by-Klaus-Frerix.pdf
    • http://cefasfese.4pu.com/8734732738738731/Geheime-Orte-In-Berlin-Ein-Ungew-hnlicher-Wegweiser-by-Christoph-Stollowsky.pdf
    • http://cefasfese.4pu.com/1730730730736735736/Unterwegs-in-Sri-Lanka-Menschen---Orte---Erlebnisse-by-R-diger-Nehberg.pdf
    • http://cefasfese.4pu.com/1730734732737732733/Unterwelten-Orte-Im-Verborgenen-Sites-of-Concealment-by-Klaus-Kiemp.pdf
    • http://cefasfese.4pu.com/8734732739736732/111-Orte-in-Tirol-die-man-g

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