Malicious PDF — malware analysis report

Heuristics 7

• 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
• Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
  The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
• 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://wastran.ru/uplcv?utm_term=distributed+computing+systems+pdf PDF link annotation

  • http://zzquansu.cn/d/files/paliloxogosoguzenufoj.pdfIn PDF document text
  • http://chicagohalo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afb97aa81e5---14578104351.pdfIn PDF document text
  • http://gostium.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a72d35341f---95533178178.pdfIn PDF document text
  • http://taketty.xyz/js/ckfinder/userfiles/files/29184710131.pdfIn PDF document text
  • https://ipcare.nl/wp-content/plugins/super-forms/uploads/php/files/rhpjrh4jofhlttt9es4hmh3h2v/67193900550.pdfIn PDF document text
  • http://mg001.cn/upload_fck/file/2021-6-28/20210628205417202908.pdfIn PDF document text
  • https://wfca-czech.cz/temp/userfiles/files/72270891600.pdfIn PDF document text
  • https://budapestpainter.hu/ckfinder/userfiles/files/mizipefuriraxipir.pdfIn PDF document text
  • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ee46050da74---zawukidukebukup.pdfIn PDF document text
  • https://airbays.com/userfiles/file/72630248572.pdfIn PDF document text
  • https://cremyco.com/app/webroot/docs/file/19909204246.pdfIn PDF document text
  • https://dascalita.ro/app/webroot/files/userfiles/files/18647093602.pdfIn PDF document text
  • https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/1611df20cd5f0f---35402261234.pdfIn PDF document text
  • https://ymvii.com/admin/upload/files/18639081617.pdfIn PDF document text
  • https://beauti-full.ru/uploads/files/56212194684.pdfIn PDF document text
  • https://www.frankreich-ferien.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1608001e53e44c---29716577138.pdfIn PDF document text
  • http://vrajacreation.com/uploaded_files/userfiles/files/bubugorenepopovaruzemoj.pdfIn PDF document text
  • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a767dd861be---lofelel.pdfIn PDF document text
  • https://uetty.xyz/js/ckfinder/userfiles/files/17315923297.pdfIn PDF document text
  • http://salonlomi.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16090a4f2ba1c3---60857867148.pdfIn PDF document text
  • https://hotelritariccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608ea68293883---vepelilonetogobujazana.pdfIn PDF document text
  • http://dirabrealtors.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c1e2a06fbe7---pabereluxajeforix.pdfIn PDF document text
  • http://boulderdivorcelaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085c48b55a29---mezirexuzemibusoxa.pdfIn PDF document text
  • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/e5f5722911254fb08f24cd7fd7b611e7/fuxenukemunu.pdfIn PDF document text
  • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
  • http://purl.org/dc/elements/1.1/In PDF document text
  • http://ns.adobe.com/pdf/1.3/In PDF document text
  • http://ns.adobe.com/xap/1.0/In PDF document text
  • http://ns.adobe.com/xap/1.0/mm/In PDF document text
  • http://ns.adobe.com/xap/1.0/rights/In PDF document text
  • http://dejavu.sourceforge.netIn PDF document text
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

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