Malicious PDF — malware analysis report

Heuristics 6

• 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 http://www.valathors.com/ckfinder/userfiles/files/6574012622.pdf In PDF document text

  • http://uyaviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609951f2c69f4---60578665435.pdfIn PDF document text
  • https://www.sharpeningfactory.com/wp-content/plugins/formcraft/file-upload/server/content/files/160837c2ccac11---2364451893.pdfIn PDF document text
  • http://hzjksj.com/images/upload/File/tawalenud.pdfIn PDF document text
  • http://werkkledingverkoop.nl/images/docman/files/64753311603.pdfIn PDF document text
  • http://www.dnevi-sekretarjev.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160b821c64faa5---limabujapuw.pdfIn PDF document text
  • http://sns.hu/_user/file/44136562494.pdfIn PDF document text
  • http://kingtonkatsu.com/uploads/files/21450433299.pdfIn PDF document text
  • https://irrisyst.eu/files/file/guvop.pdfIn PDF document text
  • http://aliglobshop.com/userfiles/file/zogapawisugujuwilo.pdfIn PDF document text
  • https://istanajp.com/contents//files/fotenugedojumigez.pdfIn PDF document text
  • http://thunderstar.cn/userfiles/file/20210702024553833891490.pdfIn PDF document text
  • http://ps-chiptuning.hu/userfiles/files/87494768179.pdfIn PDF document text
  • http://poetische-malerei.de/web/editor/files/fuvukikekokujawedofir.pdfIn PDF document text
  • http://wahluenfty.com/userfiles/94379100844.pdfIn PDF document text
  • https://aviatroglo.fr/IMG/file/703115257.pdfIn PDF document text
  • https://himalayanthailand.com/image/upload/File/vezag.pdfIn PDF document text
  • https://www.kadeavenue.com/wp-content/plugins/super-forms/uploads/php/files/949e73b106a27cb121c5c56bdde65c57/jebinovedapozaviwefek.pdfIn PDF document text
  • http://highendschmiede.de/highendfiles/file/jikutilupinemifi.pdfIn PDF document text
  • http://www.thediethub.in/wp-content/plugins/formcraft/file-upload/server/content/files/161158378dbb30---46901232357.pdfIn PDF document text
  • https://usis-consulting.us/uploads/files/84918459185.pdfIn PDF document text
  • https://primeodontorj.com/wp-content/plugins/super-forms/uploads/php/files/2207a3747c7e2fb378cfc46b734e4dca/medajuro.pdfIn PDF document text
  • http://clinicaveterinariacittadivignola.com/userfiles/files/7118300147.pdfIn PDF document text
  • https://netkat.in/ckfinder/userfiles/files/40542145185.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=team+player+examples+interviewPDF 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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