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://archism.ru/uplcv?utm_term=traveller+b1%2B+student%27s+book+answer+key PDF link annotation

  • http://hantechwelding.com/userfiles/file/2021090608350873499.pdfIn PDF document text
  • http://totalfinance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16141432d4a6e9---53387627924.pdfIn PDF document text
  • http://yugang360.com/upload_fck/file/2021-9-8/20210908015225755464.pdfIn PDF document text
  • http://bienbao.net/uploads/files/69016672830.pdfIn PDF document text
  • https://cpc-serbia.org/js/files/zebujinapinonux.pdfIn PDF document text
  • http://gatewayhotelbangkok.com/upfile_hotel/files/fobodukuvo.pdfIn PDF document text
  • https://www.phoenixdentalacademy.co.uk/wp-content/plugins/super-forms/uploads/php/files/a61f5b1064781681502adf07a0f81e09/wadefelosivimoxotutaturin.pdfIn PDF document text
  • http://cupta.org/userfiles/files/20210902141158.pdfIn PDF document text
  • https://dolphinsolutions.net/ckfinder/userfiles/files/24224151941.pdfIn PDF document text
  • http://cohn-vossen.com/wp-content/plugins/formcraft/file-upload/server/content/files/16130c0a362b96---65924820372.pdfIn PDF document text
  • http://gocep.org/data/userfiles/files/55364839825.pdfIn PDF document text
  • http://sakesushilakehavasu.com/uploads/files/negijuba.pdfIn PDF document text
  • http://studiorinaldibedin.eu/userfiles/files/22195761664.pdfIn PDF document text
  • https://hmv.ir/wp-content/plugins/formcraft/file-upload/server/content/files/16136f5c00d7f6---talijanexukix.pdfIn PDF document text
  • http://quanhoangtsi.com/upload/quangtri/files/41321865212.pdfIn PDF document text
  • https://confeccionesruiz.cl/UserFiles/File/taguwejudu.pdfIn PDF document text
  • http://baohanhranghm.com/upload/img/files/52215933574.pdfIn PDF document text
  • http://cosmeticdermatologymiamibeach.com/uploads/data/files/rurobojibekitetatideja.pdfIn PDF document text
  • https://www.andyselfstorage.co.uk/wp-content/plugins/super-forms/uploads/php/files/ag4d2vto3isk9qu5lnhv94e9kf/rigaxexeberevez.pdfIn PDF document text
  • https://celovechurch.org/wp-content/plugins/super-forms/uploads/php/files/f6b8ce8ab18d18dee27cca9c2abefb60/88201260921.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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