Malicious PDF — malware analysis report

Heuristics 8

• ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
• 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://guptajimarriagebureau.com/userfiles/file/31827151824.pdf In PDF document text

  • http://kaushalacademy.org/ckfinder/userfiles/files/69117607361.pdfIn PDF document text
  • http://ambulatorioveterinariovianello.eu/userfiles/files/daluv.pdfIn PDF document text
  • http://dierenwinkelindex.nl/images/uploads/vogozofemadis.pdfIn PDF document text
  • http://kbchina.de/upload/safov.pdfIn PDF document text
  • http://kaitosushisb.com/uploads/files/91378905157.pdfIn PDF document text
  • https://ecoinkworld.com/wp-content/plugins/super-forms/uploads/php/files/9b8f7eaeea9ad08fbedf0c61d9c880d8/woliribokikigemujufezov.pdfIn PDF document text
  • https://worldmedglobal.com/userfiles/files/zomoboxexenefurid.pdfIn PDF document text
  • https://kaptenhoki.com/contents/files/46749027002.pdfIn PDF document text
  • http://agecarekorea.com/ckupload/files/julupitexobetaje.pdfIn PDF document text
  • https://kanat.com/upload/ckfinder/files/siwuma.pdfIn PDF document text
  • http://www.viksexteriors.com/wp-content/plugins/formcraft/file-upload/server/content/files/16131fa9a6e6e1---mexix.pdfIn PDF document text
  • https://hoangvan.vn/wp-content/uploads/files/xixeradonufefizikore.pdfIn PDF document text
  • http://amindoost.ir/images/upload/files/jofazuga.pdfIn PDF document text
  • https://ncvpte.in/userfiles/file/13738503515.pdfIn PDF document text
  • http://taketty.xyz/js/ckfinder/userfiles/files/bogunugoxanosuwofalimiwir.pdfIn PDF document text
  • https://taumed.kz/upload/2021/09files/210913165013758174dzbhm.pdfIn PDF document text
  • https://ladachess.ru/userfiles/file/33621775446.pdfIn PDF document text
  • http://braintradingbcn.com/wp-content/plugins/super-forms/uploads/php/files/ac25678d8cef2146e87ad86a719c3f3b/tadodafudiboganamewode.pdfIn PDF document text
  • http://china-baby-clothes.com/d/files/59828564807.pdfIn PDF document text
  • https://sistemagestiondpr.com/userfiles/file/bojilito.pdfIn PDF document text
  • https://aymexco.ro/ckfinder/userfiles/files/44204169664.pdfIn PDF document text
  • http://matraholding.hu/images/userfiles/files/92268371504.pdfIn PDF document text
  • http://christopherdallo.com/file/xuwemidiragetigita.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=screen+recording+android+no+rootPDF 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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