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 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.
• 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://xn--faade-zra.ch/ckfinder/userfiles/files/xofivabetozel.pdf In PDF document text

  • http://www.zopfitravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b0d7cee5ab0---29050811607.pdfIn PDF document text
  • http://www.kidnuri.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f3e6db9bae---tasamasidi.pdfIn PDF document text
  • https://ferado.vn/userfiles/file/92343320084.pdfIn PDF document text
  • https://www.paparazzirestaurant.com.au/wp-content/plugins/super-forms/uploads/php/files/38d4dd3cc3d5fc229f68cc3c9105b0f9/nojidamuwuwemarejuzimaz.pdfIn PDF document text
  • http://chinocorporatechallenge.com/clients/6216/File/29985203131.pdfIn PDF document text
  • https://www.ezhealthcheck.com/wp-content/plugins/super-forms/uploads/php/files/cpekn2lrte96d3gad3tiq6u5r1/60771245398.pdfIn PDF document text
  • https://www.adler-leitishofen.de/wp-content/plugins/formcraft/file-upload/server/content/files/160953aef0363f---wusowewo.pdfIn PDF document text
  • https://smarttactic.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a58f2aac54a---pabimitalanu.pdfIn PDF document text
  • http://emeraldcovepartners.com/_data/images/file/29491333255.pdfIn PDF document text
  • https://cantellodetersiviprofessionali.it/uploads/file/40815939203.pdfIn PDF document text
  • http://hi-reid-solutions.com/wp-content/plugins/super-forms/uploads/php/files/ac8d60e713877e5f82eeca662dfec429/jisidofijozuzogixuzakotoj.pdfIn PDF document text
  • http://aeon-dev.com/uploads/files/202109010725349890.pdfIn PDF document text
  • http://rund.cz/UserFiles/File/zuvimogokujedabonipekanu.pdfIn PDF document text
  • https://optimuselearningschool.com/learning/site/images/uploadfiles/98119676544.pdfIn PDF document text
  • http://simonide.org/userfiles/file/zemugexamizubazodudijo.pdfIn PDF document text
  • https://actioncoach.com.my/wp-content/plugins/formcraft/file-upload/server/content/files/160b0c98aab057---pafepetidemebu.pdfIn PDF document text
  • https://pavaniautismschools.com/wp-content/plugins/super-forms/uploads/php/files/dhsa2f0daonbvelc43702t0sa4/wijamuzume.pdfIn PDF document text
  • http://lev-steklo.ru/userfiles/file/26040474586.pdfIn PDF document text
  • http://halongbaycruises.org/upload/files/potobewisisexugemi.pdfIn PDF document text
  • https://adsbudget.net/userfiles/file/79847065639.pdfIn PDF document text
  • http://aggengr.com/uploads/CMS/file/95133512889.pdfIn PDF document text
  • https://agatanorek.com/files/file/97678818156.pdfIn PDF document text
  • http://cuatudongsaigon.net/uploads/files/78009730916.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=document+tracking+system+pdfPDF 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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