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://infrive.ru/uplcv?utm_term=trazo+de+numeros+irracionales+en+la+recta+numerica+pdf PDF link annotation

  • https://suhrsmad.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160c63c0ee2a85---zovojiwafogikuri.pdfIn PDF document text
  • https://betalinktech.com/blmedia/file/zabomanofef.pdfIn PDF document text
  • http://cardealer-space.com/js/upload/files/tomol.pdfIn PDF document text
  • https://whitelightdesign.com/wp-content/plugins/super-forms/uploads/php/files/a5ea080c257da9a4b81e499ff87bce4f/petodeselawinewuduba.pdfIn PDF document text
  • http://namthangbasaltstone.com/uploads/image/files/20070445882.pdfIn PDF document text
  • http://linpus.com/app/webroot/userfiles/files/26147369682.pdfIn PDF document text
  • http://ofipapel.org//ckfinder/userfiles/files/37929715458.pdfIn PDF document text
  • https://xn--nmqu14inmf.com/upload/files/83195140137.pdfIn PDF document text
  • https://assurancemauricie.com/wp-content/plugins/formcraft/file-upload/server/content/files/160befa927743e---96563014306.pdfIn PDF document text
  • http://bkmjg.com/images/upload/File/lalobajasutiwufutadugosaz.pdfIn PDF document text
  • http://ladyvenus.it/userfiles/files/zapojosakovunalazi.pdfIn PDF document text
  • http://umiyawoodworks.com/fckdb/userfiles/file/1439582002.pdfIn PDF document text
  • https://ddriu.hu/wp-content/plugins/super-forms/uploads/php/files/379e74b84caea622fd507bcaf9cb97c6/birovisufusofuzipasasuvab.pdfIn PDF document text
  • https://nhahangthanghuong.com/uploads/files/xozomalelufilotap.pdfIn PDF document text
  • http://zussobrance.sk/grafika/dokumenty/97997838877.pdfIn PDF document text
  • http://zabradli-znerezu.cz/userfiles/file/nunaxonigetaresigasen.pdfIn PDF document text
  • http://lednotice.com/userData/board/file/63596020814.pdfIn PDF document text
  • https://www.westcountrystoves.co.uk/wp-content/plugins/super-forms/uploads/php/files/acaf7dd418755aadc523ac1cdb11481a/90970257465.pdfIn PDF document text
  • http://reiki-roots.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609c4fc035837---99566607943.pdfIn PDF document text
  • https://rmissio.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160844acec4c44---54239688273.pdfIn PDF document text
  • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e8538db6e2---fegobojuzu.pdfIn PDF document text
  • http://elenasteele.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a28921e63c---fubizidibap.pdfIn PDF document text
  • https://storage-in-motion.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e4c08ce696f---24229857746.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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