Malicious PDF — malware analysis report

Heuristics 7

• 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.
• 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://chcial.ru/uplcv?utm_term=tenenbaum+analytic+number+theory+pdf PDF link annotation

  • http://lncxjzxxw.com/upload_fck/file/2021-8-15/20210815230004560342.pdfIn PDF document text
  • https://ketgate.eu/wp-content/plugins/super-forms/uploads/php/files/040a712d3c0fe7524b14253ee778cfe7/72926721356.pdfIn PDF document text
  • https://autoprofi.ua/userfiles/file/38038572515.pdfIn PDF document text
  • http://handsonmontessoripk.com/userfiles/files/75125081753.pdfIn PDF document text
  • https://thejasmineway.net/wp-content/plugins/super-forms/uploads/php/files/kc4rh9kq8sap5mpfqbk2egnks7/83341368864.pdfIn PDF document text
  • http://sunnysidehighschoolclassof59.com/clients/867562/File/88410676760.pdfIn PDF document text
  • http://sjar-tech.com/uploadfile/file///2021080607171767.pdfIn PDF document text
  • http://starkhigh1972.com/clients/d/dd/dd83d6d7846a033806cdb512e10d7d7c/File/kafizojepudefi.pdfIn PDF document text
  • http://xn--e1aaafipco3bk8gra3b.xn--p1ai/upload_picture/file/96343765676.pdfIn PDF document text
  • http://ccsup.co.th/uploads/ckfinder/files/kurosegakasefuga.pdfIn PDF document text
  • https://tunhuaduytan.com/upload/userfiles/files/5061430612.pdfIn PDF document text
  • https://sailstudy.in/ckfinder/userfiles/files/kuxevefukugivitezoras.pdfIn PDF document text
  • http://www.hollyskauaicondo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f8a46f0df09---dulobenipituvum.pdfIn PDF document text
  • https://inijariku.com/ckfinder/userfiles/files/daliruneberaweruvof.pdfIn PDF document text
  • http://sspvjd.com/FileData/ckfinder/files/20210818_C2FBF04480446C48.pdfIn PDF document text
  • http://bosch-service-center.ru/uploads/files/43785150955.pdfIn PDF document text
  • http://e-cluny.cz/UserFiles/file/nebixuxuzigewazitawer.pdfIn PDF document text
  • https://www.xyoaa.org/sites/default/files/files/15737967378.pdfIn PDF document text
  • https://dentinale.eu/wp-content/plugins/super-forms/uploads/php/files/d33bb244a7fb53a81fab463850888d16/45980335713.pdfIn PDF document text
  • http://www.peopleoftheheath.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f7290d2eb1---9422597786.pdfIn PDF document text
  • https://nowbali.co.id/wp-content/plugins/formcraft/file-upload/server/content/files/1606d8d230a95c---14411304913.pdfIn PDF document text
  • http://maezawa-jidousha.com/js/upload/files/11483787085.pdfIn PDF document text
  • https://fortlauderdale-carservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b9acbc676d8---vefagupox.pdfIn PDF document text
  • https://journeypeople.cc/wp-content/plugins/super-forms/uploads/php/files/e8af9719e29eae9ca85ddd0625fb4558/8592769786.pdfIn PDF document text
  • https://www.aceitedeoliva.com/wp-content/plugins/super-forms/uploads/php/files/fdda6011147d1d246ea9a09e3024197d/vijisawemutumatoz.pdfIn PDF document text
  • http://ty-int.com/files/files/28417578690.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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