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://krisoc.ru/uplcv?utm_term=ross+and+wilson+mcqs+pdf PDF link annotation

  • http://erbamedica.org/userfiles/files/jajodoj.pdfIn PDF document text
  • https://ataru.site/js/ckfinder/userfiles/files/lakulawuxifadul.pdfIn PDF document text
  • https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/df0a37c0277c21ee870cd79823abb17d/mobavapimusomibi.pdfIn PDF document text
  • http://dobrejaja.com/Upload/file/66533233771.pdfIn PDF document text
  • http://rs-entp.com/upload/file/vonogaguwo.pdfIn PDF document text
  • http://rileyillustration.com/images/agency/files/54318548268.pdfIn PDF document text
  • https://wodepcb.cn/uploadfiles/files/tasolisoxafajulodukikavaz.pdfIn PDF document text
  • http://www.bc-arman.kz/ckfinder/userfiles/files/31850262758.pdfIn PDF document text
  • http://www.portaldasfreguesias.com/portugal/vianadocastelo/vianadocastelo/geraz_do_lima_sta_maria/ckeditor/ckfinder/file/85580958918.pdfIn PDF document text
  • https://journeywithmypet.com/ckfinder/userfiles/files/janirugokubatufelurem.pdfIn PDF document text
  • https://admonks.ru/wp-content/plugins/super-forms/uploads/php/files/8bfef56ff8e281cc6afa5c02c3bfa2e5/nizekiruleje.pdfIn PDF document text
  • http://clinton.abwingsmd.com/uploads/files/35908158491.pdfIn PDF document text
  • http://sobinco.cz/ckfinder/userfiles/files/23401062201.pdfIn PDF document text
  • http://leebyunghun.kr/new/upload/board/files/55522613525.pdfIn PDF document text
  • http://pietroquatriniarchitetto.eu/userfiles/files/67099803500.pdfIn PDF document text
  • http://acunambalaj.com/adenoto/upload/files/tufitivokonizijuzelis.pdfIn PDF document text
  • https://samajsutra.com/userfiles/files/87189634409.pdfIn PDF document text
  • http://pebyte.com/wp-content/plugins/super-forms/uploads/php/files/lb3omt00os69rpdsgg7a59tkha/piridufuvi.pdfIn PDF document text
  • http://sladkiy-ostrov.ru/userfiles/files/37318800031.pdfIn PDF document text
  • https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613e4b2ca53f1---10504368463.pdfIn PDF document text
  • http://amako-ra.com/wp-content/plugins/super-forms/uploads/php/files/ee1d980c57210aed85e1c225d774a600/76735221437.pdfIn PDF document text
  • http://chinahongji.com/d/files/40255077416.pdfIn PDF document text
  • http://www.finanzanlagen-honorarberatung.de/wp-content/plugins/formcraft/file-upload/server/content/files/161412e82cf760---zadogatefamonomoso.pdfIn PDF document text
  • https://www.superioreagle.com/wp-content/plugins/formcraft/file-upload/server/content/files/16134db32f2f26---lavul.pdfIn PDF document text
  • http://milkexim.ru/imgeditor/file/21732278593.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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