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://kemxoithanhhang.vn/app/webroot/files/images/pages/files/57128558518.pdf In PDF document text

  • http://nguyenthaotech.com/upload/files/faranoxorukan.pdfIn PDF document text
  • https://taiwan-tiaya.com/upload/tiaya_official/files/widab.pdfIn PDF document text
  • https://horkolas-gatlas.hu/ufiles/file/vijijimivolafenasovipeg.pdfIn PDF document text
  • http://njchemland.com/upload/files/66606291836.pdfIn PDF document text
  • https://www.leadercaravans.com.au/application/third_party/ckfinder/userfiles/files/jarajejulibatadotejuf.pdfIn PDF document text
  • http://thaide.org/userfiles/file/ridugademem.pdfIn PDF document text
  • https://www.infratechgroep.nl/wp-content/plugins/super-forms/uploads/php/files/34bcfd8dab208b189da1d5068b55a9d7/kinigepun.pdfIn PDF document text
  • https://gmt-tw.com/app/webroot/userfiles/files/nutamamupiz.pdfIn PDF document text
  • https://fu-ko-property-agency.com/webroot/editor-uploads/files/duduwisoligomavujebumuj.pdfIn PDF document text
  • http://maxitelt.no/wp-content/plugins/formcraft/file-upload/server/content/files/16131ac6da19ac---53422731624.pdfIn PDF document text
  • https://n-tlg.com/files/file/fedipulupejojaj.pdfIn PDF document text
  • https://anzhero-sudzhensk.verlauf-ekb.ru/admin/ckfinder/userfiles/files/kizixizagogud.pdfIn PDF document text
  • http://churchliferesources.org/wp-content/plugins/formcraft/file-upload/server/content/files/16132843c1d5da---rusoponetofexodomenalul.pdfIn PDF document text
  • http://cathyourhair.nl/js/ckfinder/userfiles/files/34514940299.pdfIn PDF document text
  • https://jotekonybakterium.hu/userfiles/files/25151834171.pdfIn PDF document text
  • https://www.inkfactory.pk/wp-content/plugins/formcraft/file-upload/server/content/files/161410d95392b6---71089743508.pdfIn PDF document text
  • http://www.awakohchang.com/image/upload/File/543765013.pdfIn PDF document text
  • http://abwcockeysville.com/uploads/files/motafe.pdfIn PDF document text
  • http://parfumerieindex.nl/images/uploads/4705074116.pdfIn PDF document text
  • https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/161378e87098c6---pazabimita.pdfIn PDF document text
  • http://state-lithium.com/upload/files/14470954067.pdfIn PDF document text
  • http://e-sportis.com/images/upload/75228537716.pdfIn PDF document text
  • https://theloneranger.tv/clients/loneranger/ckfinder/userfiles/files/41155618312.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=use+phone+as+webcam+freePDF link annotation
  • 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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