Malicious PDF — malware analysis report

Static analysis result for SHA-256 d16074b467977a7b…

MALICIOUS

PDF

51.3 KB Created: 2021-10-02 16:32:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 67e53b3953ca77086db94e706b2b008e SHA-1: ed7278a4408b4827c2e06be403ad9aa7a19987a2 SHA-256: d16074b467977a7b1c35889411f040aafb9a310ee6f7375a6d42f155ff01188b
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, which is a common technique for executing malicious code within documents. The heuristic firings indicate the presence of external URIs and a link farm, suggesting the PDF is designed to redirect users to potentially harmful websites. ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7557

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://www.allduniv.ac.in/ckfinder/userfiles/files/nivujaf.pdf In PDF document text
    • https://fa-vietnam.com/webroot/img/files/75963118042.pdfIn PDF document text
    • http://www.britocunhaadvocacia.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/161415425e9c80---fujaza.pdfIn PDF document text
    • http://alltechsro.cz/files/rawasibilafowofelerajezut.pdfIn PDF document text
    • http://joelcsimonesq.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/31475166759.pdfIn PDF document text
    • https://rosedreamholidayhomes.com/ckfinder/userfiles/files/9746645641.pdfIn PDF document text
    • http://thedewakohchang.com/image/upload/File/0646452144.pdfIn PDF document text
    • https://ekoelprom.pl/public/images/editor/file/15418470908.pdfIn PDF document text
    • http://infoegrafica.com/userfiles/files/66348019560.pdfIn PDF document text
    • https://aawyx.com/sites/default/imageuser/file/jovakekulegetadisalito.pdfIn PDF document text
    • http://ipvoicenj.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136b8f0ab5c8---zivitozif.pdfIn PDF document text
    • http://cafemsoffice.com/userfiles/files/53578918696.pdfIn PDF document text
    • http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/ft5hl7ajrl1bjgqruebsmdb0h3/kejaz.pdfIn PDF document text
    • https://artedelvalle.cl/gal/files/file/bajilevadosabakani.pdfIn PDF document text
    • http://uro-medical.pl/zdjecia/fotki/file/miwibotoleposa.pdfIn PDF document text
    • http://ds-dq.com/uploadfile/1633156498.pdfIn PDF document text
    • http://wefocusdesign.com/upload/files/namifaxamaxo.pdfIn PDF document text
    • http://vo23.ru/upload/file/36501581267.pdfIn PDF document text
    • https://exam10.menapoint.com/app/webroot/upload/files/befero.pdfIn PDF document text
    • https://www.algeos.com/js/ckfinder/userfiles/files/75360458961.pdfIn PDF document text
    • https://zagi.hr/files/66890529826.pdfIn PDF document text
    • http://abwnickersonplaza.com/uploads/files/70501001804.pdfIn PDF document text
    • https://alasclub.gr/neuro/ckfinder/userfiles/files/64124333360.pdfIn PDF document text
    • https://anbc31.iscriptscloud.com/app/webroot/files/file/wujevugiw.pdfIn PDF document text
    • http://www.39koratmachinery.com/file_upload/files/numom.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=59+to+cmPDF link annotation

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