Malicious PDF — malware analysis report

Heuristics 6

• ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
• 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.
• 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=area+de+superficie+corporal+calculo PDF link annotation

  • http://www.brennholz-heinlein.de/wp-content/plugins/formcraft/file-upload/server/content/files/160710b15ece0c---gabunivefurezedeb.pdfIn PDF document text
  • http://nanoscopy.ru/uploads/files/7515811395.pdfIn PDF document text
  • https://www.pferde-fuer-unsere-kinder.de/wp-content/plugins/formcraft/file-upload/server/content/files/16114c3155f8f2---55857358671.pdfIn PDF document text
  • http://exantusfamilyreunion.com/clients/9/96/968554593547eb574606130639276270/File/fanalegosefilomufovujin.pdfIn PDF document text
  • https://www.corridar.com/wp-content/plugins/super-forms/uploads/php/files/jiqstf9n5hpe2r1lbhogkn80qa/60919329079.pdfIn PDF document text
  • http://solemarservizi.it/userfiles/files/6287347249.pdfIn PDF document text
  • http://bizwd.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610096f1069e2---68181626346.pdfIn PDF document text
  • https://frasertechno.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e668988032---21893465192.pdfIn PDF document text
  • https://desertflying.club/wp-content/plugins/formcraft/file-upload/server/content/files/16075e785cd8b9---nududali.pdfIn PDF document text
  • http://zonweringbelgie.be/ckfinder/userfiles/files/2327434836.pdfIn PDF document text
  • https://chicagoportablexray.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bcab8b5044d---81953111422.pdfIn PDF document text
  • http://baybayankaauamo.com/clients/c/c9/c9e0f772d4a556598cfa564a27137582/File/44653371324.pdfIn PDF document text
  • https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/6346a2cb2085599dfec6cdc5cd382c94/21040983347.pdfIn PDF document text
  • http://asckhn.com/acskhn/userfiles/file/mizizet.pdfIn PDF document text
  • https://colakcivi.com/userfiles/file/kajowuxagunapabomir.pdfIn PDF document text
  • http://www.lavalledesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/16103217a855d7---62637149914.pdfIn PDF document text
  • https://flylights.pl/wp-content/plugins/super-forms/uploads/php/files/lt7ukbs58negof5t9trvd69ej3/80114802915.pdfIn PDF document text
  • https://www.avenueroadadvertising.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081954245890---fodudufug.pdfIn PDF document text
  • https://agrimal.pl/userfiles/file/nunofuvokadi.pdfIn PDF document text
  • https://apparel.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/1d59d90634245c26988d1ae1a3d43ff2/jadajilidikudotoxuf.pdfIn PDF document text
  • https://amatnieks.com/pictures/image/91532975022.pdfIn PDF document text
  • http://dambi.pl/userfiles/file/46175421159.pdfIn PDF document text
  • https://ocvirapuato.com.mx/wp-content/plugins/super-forms/uploads/php/files/ba69e3b8d7c488d1790eccd61bf59a47/bamawixavejusa.pdfIn PDF document text
  • http://wami.cc/data/files/xiwesadixemebiguv.pdfIn PDF document text
  • http://sts-logistika.ru/wp-content/plugins/super-forms/uploads/php/files/60ac671fde41fb298a2fb12eb904b34d/16838613755.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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