Malicious PDF — malware analysis report

Static analysis result for SHA-256 6db877ca8ce34af0…

MALICIOUS

PDF

17.6 KB Created: 2019-04-30 03:49:47 +01:00 Authoring application: mPDF 5.7
MD5: b8f16d3a7ec03b99eff009b96045fe05 SHA-1: 8167572f4ea63a60447c7777f5dc138f0fabd4a8 SHA-256: 6db877ca8ce34af0e267bea61aa385f8e2977293dd6862143419b8abe57ad804
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO manipulation or to distribute further malicious content. The ML classifier also flagged this PDF as malicious. While the specific intent of the linked PDFs is unclear, the sheer volume and the heuristic firing suggest a malicious purpose, likely related to driving traffic or distributing malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9925

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://loaminoo.linkpc.net/8097091093096090/Wenn-die-Wildnis-ruft-by-Susie-Drougas.pdf
    • http://loaminoo.linkpc.net/8097091095094097/Wenn-der-Schattenmann-ruft-Mystery-340-by-Raven-Cross.pdf
    • http://loaminoo.linkpc.net/8097091096093097/Das-magische-Amulett-92-Nachts-wenn-der-Werwolf-ruft-by-Jan-Gardemann.pdf
    • http://loaminoo.linkpc.net/1091094095097091091/Sage-Nie-Du-Gehst-Den-Letzten-Weg-Der-Genozid-an-Den-Litauischen-Juden-1941-44-Ausstellungskatalog-Konzeption-Und-Texte-Roswitha-Dasch-by-Roswitha-Dasch.pdf
    • http://loaminoo.linkpc.net/1090097090094098094/Roswitha-Hecke---Irene-by-Roswitha-Hecke.pdf
    • http://loaminoo.linkpc.net/1091090091090090091/Sicher-anlegen-Was-Sie-wissen-sollten-wenn-Sie-Geld-investieren-Was-tun-wenn-etwas-schief-l-uft-Ausgabe-sterreich-by-Angelika-Ahrens.pdf
    • http://loaminoo.linkpc.net/8097091092099094/Wen-das-Meer-ruft-by-Kim-Henry.pdf
    • http://loaminoo.linkpc.net/8097091094094095/Der-Schattenzirkus-ruft-by-Rudolf-Stirn.pdf
    • http://loaminoo.linkpc.net/8097091092099096/Feedback-from-the-Factory-Floor-by-Harley-Ruft.pdf
    • http://loaminoo.linkpc.net/8097091096094092/Wachet-auf-ruft-uns-die-Stimme-from-Cantata-140-by-Helmut-Alsdorf.pdf
    • http://loaminoo.linkpc.net/1090097090096095090/Nanook-of-the-North-from-1922-to-Today-The-Famous-Arctic-Documentary-and-Its-Afterlife-by-Roswitha-Skare.pdf
    • http://loaminoo.linkpc.net/1091099098094090094/Nach-mir-kr-ht-kein-Schwein---Eine-B-uerin-erz-hlt-Landfrauen-13-by-Roswitha-Gruber.pdf
    • http://loaminoo.linkpc.net/1090097090094098098/The-Plays-of-Roswitha-by-Hrotsvitha-Hrotsvitha.pdf
    • http://loaminoo.linkpc.net/9090092090099094/Wenn-Loa-erwacht-by-Mira-Roth.pdf
    • http://loaminoo.linkpc.net/1090095091095092091/Wenn-ich-mal-gro-bin-by-Martin-Reichert.pdf
    • http://loaminoo.linkpc.net/9090091099092095/Wenn-Christus-in-Dir-erwacht-by-Richard-Adelbrand.pdf
    • http://loaminoo.linkpc.net/1090092090095095099/Wenn-s-brennt-Roman-by-Stephan-Reich.pdf
    • http://loaminoo.linkpc.net/9098092098090096/Wenn-du-an-meiner-Seite-bist-by-Sally-Hepworth.pdf
    • http://loaminoo.linkpc.net/1091094095093090095/Was-w-re-wenn-Schreib-bungen-f-r-Schriftsteller-by-Anne-Bernays.pdf
    • http://loaminoo.linkpc.net/1090097095092099098/Wenn-die-Filzlaus-zweimal-juckt-by-Thomas-Reich.pdf

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