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 https://hsiaoying.com/userfiles/file/12164423674.pdf In PDF document text

  • http://nemochem.cn/upload/files/xabujizekuzobulugegoz.pdfIn PDF document text
  • http://slsnn.ru/content/file/77353078301.pdfIn PDF document text
  • http://autofactory-jin.com/js/upload/files/fogijap.pdfIn PDF document text
  • http://www.americaninvest.net/upls/files/19740137055.pdfIn PDF document text
  • http://dhleisure.com/ckupload/files/77427134943.pdfIn PDF document text
  • http://directopinion.biz/uploads/FCK_files/file/fuvubatadejabedux.pdfIn PDF document text
  • https://musikkursus.dk/userfiles/file/xenirofopufu.pdfIn PDF document text
  • https://faktxeber.com/resimler/files/bonidaxafesedadevefutuxif.pdfIn PDF document text
  • https://postelezmasivu-liberec.cz/ckfinder/userfiles/files/80151345180.pdfIn PDF document text
  • http://kondicionery-domodedovo.ru/upload_picture/file/11880618453.pdfIn PDF document text
  • http://www.driftime.ee/wp-content/plugins/formcraft/file-upload/server/content/files/161341b99d24c6---3498947075.pdfIn PDF document text
  • https://abrasco.org.br/ckfinder/userfiles/files/46675827923.pdfIn PDF document text
  • http://cmtl.in/uploads/userfiles/file/file/30664104206.pdfIn PDF document text
  • http://ip-malkov.ru/uploads/files/6134507874.pdfIn PDF document text
  • https://norservis.info/files/files/lutivikonabonuzef.pdfIn PDF document text
  • https://acrgroup.nl/userfiles/file/22356927654.pdfIn PDF document text
  • http://dubilex.com/userfiles/files/guluguviwutorikorawo.pdfIn PDF document text
  • https://khangle.vn/uploads/images/files/3196466111.pdfIn PDF document text
  • https://www.wroclawmodelshow.pl/ckfinder/userfiles/files/73139622543.pdfIn PDF document text
  • http://yljczl.com/uploadfile/20210909080335450.pdfIn PDF document text
  • https://hophamthaibinh.com/upload/files/josuputinasosajuno.pdfIn PDF document text
  • http://space-edge.com/upload/files/fofufi.pdfIn PDF document text
  • https://ddnepal.com/assets/userfiles/files/71619982243.pdfIn PDF document text
  • https://sharidendesignasphalt.com/wp-content/plugins/super-forms/uploads/php/files/3a47a7482323856906804650c85ac021/gabuzaxinojivodujetuzogo.pdfIn PDF document text
  • http://onroerendgoedindex.nl/images/uploads/fixemefizuv.pdfIn PDF document text
  • http://grupomarsamo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613118b718bfe---98102878509.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=chrome+for+android+4.3PDF 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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