Malicious PDF — malware analysis report

Heuristics 7

• ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
• 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 http://thunderstar.cn/userfiles/file/20210906195757954155821.pdf In PDF document text

  • https://eurochen.com/UpFiles/WebEditorFiles/file/75314795656.pdfIn PDF document text
  • http://palyavalaszto.hu/teszt/upload/file/gigusuv.pdfIn PDF document text
  • http://uniradioweb.info/userfiles/files/70012863410.pdfIn PDF document text
  • http://profstil.az/userfiles/file/bewizexe.pdfIn PDF document text
  • https://comfort8889.com/upload/files/wawawudidiwisemebobili.pdfIn PDF document text
  • http://propertiesforrent.com/userfiles/file///75857350190.pdfIn PDF document text
  • https://ciela13.leaddeehub.com/userfiles/files/dufaleze.pdfIn PDF document text
  • http://speakingaboutnetworking.com/ckfinder/userfiles/files/98260452811.pdfIn PDF document text
  • http://qqwandai.com/uploadfile/file/bagurozovofosuvifusulare.pdfIn PDF document text
  • http://yournamebadges.com/withyourdog/cms_uploads/file/tubal.pdfIn PDF document text
  • http://paintmaster.hu/js/ckfinder/userfiles/files/fexakanibikiperasito.pdfIn PDF document text
  • http://alvasari.com/wp-content/plugins/formcraft/file-upload/server/content/files/161315da84d05e---51521609292.pdfIn PDF document text
  • https://bunian-co.com/other_files/File/90200981512.pdfIn PDF document text
  • http://stroynerud-sm.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1613b7731165ca---13193234779.pdfIn PDF document text
  • http://baliretreatcenter.com/olabali_ci/media/images/newsfiles/fupabujipuzejakasawowetu.pdfIn PDF document text
  • http://casaperugia.fr/userfiles/file/96066449400.pdfIn PDF document text
  • https://staffxrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/c705ce31f0644f5712a173ab51967f9a/54231007504.pdfIn PDF document text
  • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/161398c25716e4---27644323380.pdfIn PDF document text
  • http://4seasonstours.in/userfiles/file/mezodiwonovok.pdfIn PDF document text
  • http://multiseal.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/1613de45cdecd8---13129185002.pdfIn PDF document text
  • https://polandpools.com/contents/files/63353723677.pdfIn PDF document text
  • https://elsadaulte.com/ckfinder/userfiles/files/likuwugefumilaxatufi.pdfIn PDF document text
  • http://artpolyclinic.com/file/files/xedomonuku.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=how+to+stop+android+phone+from+hangingPDF 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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