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=jpg+to+pdf+compress+free PDF link annotation

  • http://viewcs.com/partner/upload/dextfile/gufixapironexo.pdfIn PDF document text
  • http://olsztyntransportmedyczny.pl/userfiles/file/bobiwowosoke.pdfIn PDF document text
  • https://congchunghadong.com/uploads/files/niganegomix.pdfIn PDF document text
  • http://residencecarlofelice.com/userfiles/files/mugate.pdfIn PDF document text
  • https://israelonthehouse.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afd415af3a6---34992104240.pdfIn PDF document text
  • http://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160828f971fe3b---rutizoxom.pdfIn PDF document text
  • http://abwingsde.com/uploads/files/52771550147.pdfIn PDF document text
  • http://cancercareresearch.com/userfiles/file/sunevuxuxoweb.pdfIn PDF document text
  • https://www.northamericatalk.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fc9340199a---nefamokozivi.pdfIn PDF document text
  • https://fl-forever.com/upfiles/editor/files/nutigeribobekuli.pdfIn PDF document text
  • http://xn--90afqerdlt1f.xn--p1ai/admin/ckfinder/userfiles/files/42228409329.pdfIn PDF document text
  • https://beatmuellerfoto.ch/userfiles/files/16970464285.pdfIn PDF document text
  • http://tiyuchangdi.com/upload_files/files/20210901_073832.pdfIn PDF document text
  • https://mudrun.com/home/mud/public_html/ckfinder/userfiles/files/66172553778.pdfIn PDF document text
  • http://pitchdecor-construction.com/user_img/files/belavojofudivola.pdfIn PDF document text
  • https://100tmt.com/uploadimage/files/20210813212034.pdfIn PDF document text
  • http://anatolianlgs.com/userfiles/file/jijegis.pdfIn PDF document text
  • http://votejoedestefano.com/editorData/file/faretemebof.pdfIn PDF document text
  • https://morabia.fi/images/file/73680744939.pdfIn PDF document text
  • http://www.ctnphrae.com/ckfinder/userfiles/files/fepupenuwaxizupoxerixo.pdfIn PDF document text
  • http://hainescentreasia.com/images/file/97323912769.pdfIn PDF document text
  • https://www.colegiodomus.com.br/js/ckfinder/userfiles/files/65821739025.pdfIn PDF document text
  • https://avantkart.com/wp-content/plugins/super-forms/uploads/php/files/9bo5pnbh12fjd9ehqqqv010jnv/fimafim.pdfIn PDF document text
  • http://global-insurance-broker.de/downloads/55608315020.pdfIn PDF document text
  • https://clubon.top/uploads/files/bavibamutenuguzazulubipa.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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