Malicious PDF — malware analysis report

Heuristics 8

• ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
• Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
  Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
• 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://smidgel.ru/uplcv?utm_term=shortcut+delete+history+chrome PDF link annotation

  • https://www.loscam.com/lib_common/ckeditor/ckfinder/userfiles/files/13113636283.pdfIn PDF document text
  • http://thaide.org/userfiles/file/rodabakaxudopabipesadu.pdfIn PDF document text
  • http://koreabulk.net/userData/board/file/zonegabaduguko.pdfIn PDF document text
  • https://promocionesnma.com/wp-content/plugins/super-forms/uploads/php/files/3a245f9dbc8f46a08e84d632fe6536ab/petewer.pdfIn PDF document text
  • http://fatename.com/uploads/files/202109121517357118.pdfIn PDF document text
  • https://beta.nhatthiengroup.com/files/uploaded/files/21006634182.pdfIn PDF document text
  • http://songdolandmarkcity.com/userfiles/file/25557822755.pdfIn PDF document text
  • http://hattrick-sports.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b325d0a103---31370004285.pdfIn PDF document text
  • https://underworldgear.com/upload/users/files/zivanij.pdfIn PDF document text
  • http://mkconline.com/landmark/ckfinder/userfiles/files/20878431767.pdfIn PDF document text
  • http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/161334e3f5c642---vitenipatof.pdfIn PDF document text
  • https://www.algeos.com/js/ckfinder/userfiles/files/16474659435.pdfIn PDF document text
  • https://boucherienabli.com/uploads/FCK_files/file/burinexamaluru.pdfIn PDF document text
  • http://peoplefineart.com/assets/202109/files/20210902122241300958.pdfIn PDF document text
  • https://www.sabiamente.es/wp-content/plugins/formcraft/file-upload/server/content/files/161424e703ebd6---vabumosepipopo.pdfIn PDF document text
  • http://www.aceitunasdelguadalhorce.es/ckfinder/userfiles/files/80565030569.pdfIn PDF document text
  • http://teknis.it/userfiles/files/rulukifutubideti.pdfIn PDF document text
  • http://theheavent.com/userfiles/files/86174401878.pdfIn PDF document text
  • https://vrindaindia.com/php/joseph/uploads/file/panamezizubugazejovobegu.pdfIn PDF document text
  • https://sgicorp.com/userfiles/files/buzenepategudiwox.pdfIn PDF document text
  • http://hzkontejnery.cz/ckfinder/userfiles/files/9969846399.pdfIn PDF document text
  • https://intervalhousehamilton.org/ckfinder/userfiles/files/63333616357.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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