Malicious PDF — malware analysis report

Heuristics 6

• 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.
• 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://infrive.ru/uplcv?utm_term=ejercicios+de+olimpiadas+matematicas+para+secundaria+pdf PDF link annotation

  • http://rauvuonsach.net/images/uploads/files/67808677428.pdfIn PDF document text
  • http://kanchanaspa.com/ckfinder/userfiles/files/veluxivovev.pdfIn PDF document text
  • http://alexandercdg.com/clients/36029/File/2063991776.pdfIn PDF document text
  • http://yuha.be/_files/file/88300060403.pdfIn PDF document text
  • http://abaj.cz/UserFiles/File/sumitoseboganarad.pdfIn PDF document text
  • https://eandjfamilyhealthcenter.com/wp-content/plugins/super-forms/uploads/php/files/a79d240e82e976e3cdfd2d4a8ea7ffb0/3731508187.pdfIn PDF document text
  • https://tktravelkorea.com/FileData/ckfinder/files/20210811_D2D88017809692E0.pdfIn PDF document text
  • http://cdwy028.com/uploadfile/file/20210704231324.pdfIn PDF document text
  • http://caphegiabao.com/upload/fck/file/60519276790.pdfIn PDF document text
  • http://teresachild.com/upload/files/83000102560.pdfIn PDF document text
  • https://refour.eu/wp-content/plugins/super-forms/uploads/php/files/c464897c5fc13f6d1d6246d135ec4554/murum.pdfIn PDF document text
  • https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/160814e12629db---60058962234.pdfIn PDF document text
  • http://terezmisszio.eu/files/file/baputiwuwe.pdfIn PDF document text
  • http://www.jimenez-casquet.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c56d2d78f1---67696664573.pdfIn PDF document text
  • https://www.pietri-automobiles.com/wp-content/plugins/super-forms/uploads/php/files/q4opje617bqj2l1oc2obo5cenu/jeganajufeligezuxo.pdfIn PDF document text
  • https://vetranhtuongmamnon.vn/wp-content/plugins/super-forms/uploads/php/files/165jeu4a6823j5h185i1v1co8v/66099892641.pdfIn PDF document text
  • http://bioident.pl/photos_fck/file/gamusetidorunigemovile.pdfIn PDF document text
  • http://ck-buhgalter.ru/userfiles/file/zitogawarij.pdfIn PDF document text
  • http://itkaufmann.com/images/fckimages/file/42923997971.pdfIn PDF document text
  • https://www.frontierexim.com/wp-content/plugins/super-forms/uploads/php/files/2ut4vpvrg6p5d1uflv0hes77p5/pamamukamupexureb.pdfIn PDF document text
  • http://transchem-tech.com/Uploadfiles/files/9090179874.pdfIn PDF document text
  • http://toyotarenta.net/FileData/ckfinder/files/20210706_BC2291112C6B50A9.pdfIn PDF document text
  • http://m-camper.ru/ckfinder/userfiles/files/nosabafu.pdfIn PDF document text
  • https://mosoptagro.ru/wp-content/plugins/super-forms/uploads/php/files/41b430d8ab7035c0196d252f57868085/92636918310.pdfIn PDF document text
  • http://gostium.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b8c77a978ec---77510734779.pdfIn PDF document text
  • http://travisreunion.com/clients/1/1d/1d9c560ef9ee6310b862f4c9d288d7bd/File/8047914463.pdfIn PDF document text
  • https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/a0d33d72181e7fa637cb3fe25aea1d02/nakawifivarixeruxigiv.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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