Malicious PDF — malware analysis report

Heuristics 8

• 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 to algorithmically-generated URL high PDF_RANDOM_URL_LINK
  PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
• 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://impulsa.mantareys.net/uploads/plantillas/files/13566057620.pdf In PDF document text

  • http://mediasingrid.com/js/new/fckeditor/userfiles/file/zisedod.pdfIn PDF document text
  • http://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/161406d33793cc---melafefaxefapanatave.pdfIn PDF document text
  • http://tongchangkj.com/uploadfile/file///2021091018025377.pdfIn PDF document text
  • https://sellos-mecanicos.com/wp-content/plugins/super-forms/uploads/php/files/e7f2ac6444feb4691bb6f8ddd3e4cbbe/jogida.pdfIn PDF document text
  • http://vuonlan.vn/data/upload/files/62524505006.pdfIn PDF document text
  • https://webmenuplus.com/images/file/54084743642.pdfIn PDF document text
  • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613498a141e3d---31749899942.pdfIn PDF document text
  • http://stefanourso.com/public/userfiles/file/74907457332.pdfIn PDF document text
  • https://szabolcsipeter.com/userfiles/file/7280203530.pdfIn PDF document text
  • http://usmleworkout.com/files/file/53398678604.pdfIn PDF document text
  • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614ce71c987c1---99669975792.pdfIn PDF document text
  • https://cantellodetersiviprofessionali.it/uploads/file/kujilugukamejoderiko.pdfIn PDF document text
  • https://kindeeyudee.com/ck_files/files/gipetinosepijadodivemok.pdfIn PDF document text
  • https://akconta.com/uploads/files/lasewa.pdfIn PDF document text
  • http://mkconline.com/landmark/ckfinder/userfiles/files/94742813968.pdfIn PDF document text
  • http://www.orarestauratorisaf.it/wp-content/plugins/formcraft/file-upload/server/content/files/1613c25c835c30---gazuli.pdfIn PDF document text
  • http://www.uc-kushiro.net/images/library/File/63619601839.pdfIn PDF document text
  • http://www.darvidproperty.com/news/file/wadexawegelo.pdfIn PDF document text
  • http://satcomlink.com/userData/board/file/tefarewuxu.pdfIn PDF document text
  • http://pensionpoint.cz/userfiles/files/75796883226.pdfIn PDF document text
  • http://myepres.com/HotelEstimator/userfiles/file/91005146079.pdfIn PDF document text
  • https://360clothing.in/home/www360cl/public_html/uploads/images/files/97992112073.pdfIn PDF document text
  • https://icicle-mountaineering.ltd.uk/ckfinder/userfiles/files/48568687136.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=metal+scrap+unturnedPDF 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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