Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d7e304fffb8529b…

MALICIOUS

PDF

79.1 KB Created: 2021-09-10 01:55:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 317530b5084a475d210424328c5863f4 SHA-1: f7668d450012d76eaa6a5b077d0582eb78dacac2 SHA-256: 2d7e304fffb8529b15014049716797adbbe2d176c288d35ce7bed6ca98e6f9ac
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF sample contains embedded JavaScript, which is often used to initiate malicious actions. The sample also functions as a link farm, directing users to multiple compromised WordPress upload directories and disposable hosting sites. These elements strongly suggest an intent to lure users to malicious sites for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5568

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 https://actsonics.com/uploads/files/202109092200414126.pdf In PDF document text
    • http://gowowdeli.com/uploads/files/semeselezikipelomipotoke.pdfIn PDF document text
    • https://sv-fin.ru/wp-content/plugins/super-forms/uploads/php/files/ce842914a256539606dd9aeb579425ea/39918511271.pdfIn PDF document text
    • https://sensormaticltd.com/app/templates/js/ckfinder/userfiles/files/kufenalub.pdfIn PDF document text
    • http://pomodorolennep.de/gfx/userfiles/files/nowotesuwifomelotizi.pdfIn PDF document text
    • http://busangh.com/attfile/fckimg/file///20210904134129_378230265.pdfIn PDF document text
    • http://laarakkers.com/ckfinder/userfiles/files/80141394040.pdfIn PDF document text
    • http://zonwering-nederland.eu/ckfinder/userfiles/files/86601189251.pdfIn PDF document text
    • http://maxitelt.no/wp-content/plugins/formcraft/file-upload/server/content/files/16132c76cd7233---lebonaxiputamogoto.pdfIn PDF document text
    • http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613410de2646c---12491617706.pdfIn PDF document text
    • https://www.golaw.net/wp-content/plugins/formcraft/file-upload/server/content/files/16133101f2d0e5---75879304399.pdfIn PDF document text
    • http://longruiglass.com/ckfinder/userfiles/files/20210907_111228.pdfIn PDF document text
    • http://merwepizza.com/upload/file/30366618210.pdfIn PDF document text
    • https://futurefacesmiami.com/uploads/file/23405169.pdfIn PDF document text
    • https://fetogram.com/images/upload/files/kotepenaziji.pdfIn PDF document text
    • http://train-in-japan.com/images/blog/file/tipifitarofavidavelejov.pdfIn PDF document text
    • http://vasvaripalmuzeum.hu/upload/file/nuwotesofuxuja.pdfIn PDF document text
    • https://hizlipin.com/calisma2/files/uploads/xaledapazomatavedu.pdfIn PDF document text
    • http://fskyok.com/uploadfile/files/punasukibivofaputij.pdfIn PDF document text
    • http://www.coverseg.com/uploads/ckfinder/files/27138086401.pdfIn PDF document text
    • http://vdadanang.vn/app/webroot/assets/files/90308973760.pdfIn PDF document text
    • http://canvangdientu.com/images/file/povadezegen.pdfIn PDF document text
    • https://proektasis.gr/admin/spaw2/uploads/files/baloluligulosononuba.pdfIn PDF document text
    • https://ozora.schaffsen.com/contents/file/55288965618.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=2+square+root+16PDF link annotation
    • http://kioskcondoweb.wpengine.com/wp-content/plugins/formcraft/file-upload/server/content/files/161370b90efb54---26664585255.pdfIn PDF document text

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