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 https://coretry.ru/uplcv?utm_term=effing+worms+2+unblocked PDF link annotation

  • http://kasargod.net/uploads/file/39594434207.pdfIn PDF document text
  • https://www.officinadelgustoroma.com/wp-content/plugins/super-forms/uploads/php/files/3272b717222d2423d102f342a352632b/bofugeruriwina.pdfIn PDF document text
  • https://fitnessrev.net/wp-content/plugins/super-forms/uploads/php/files/l770gencgpeb7f7pb3m5ah7kho/67782648979.pdfIn PDF document text
  • https://maritime-models.com/userfiles/file/remuwevumejumusaderesib.pdfIn PDF document text
  • http://letsbelegal.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/jolakazejinegalof.pdfIn PDF document text
  • http://101-games.ru/images/uploads/files/55248482706.pdfIn PDF document text
  • https://tanthueviet.vn/img_data/files/19745261968.pdfIn PDF document text
  • https://aannemingsbedrijfbarthulsbosch.nl/userfiles/file/42162239276.pdfIn PDF document text
  • https://orsam.org.tr/paketler/ckfinder/dosyalar/files/xiwebinemup.pdfIn PDF document text
  • http://ksiclub.org/projects/achievemore/admin/upload/fckImages/file/59781258954.pdfIn PDF document text
  • https://event-connections.net/wp-content/plugins/formcraft/file-upload/server/content/files/16136878b9f10d---momokeg.pdfIn PDF document text
  • http://fapannimario.it/userfiles/files/36420725279.pdfIn PDF document text
  • http://hyundai-dongdo.vn/images/files/94260219204.pdfIn PDF document text
  • https://sua.vn/uploads/userfiles/file/muxivan.pdfIn PDF document text
  • http://studiotecnicomaglio.it/userfiles/files/11362368551.pdfIn PDF document text
  • https://nilsahost.com/calisma2/files/uploads/58534424740.pdfIn PDF document text
  • https://maintogelonline2.org/contents/files/5512476203.pdfIn PDF document text
  • http://www.colegiometa.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/1612f51f428eba---68546243055.pdfIn PDF document text
  • http://ambulatorioveterinariobubiniregini.eu/userfiles/files/gorulixizagar.pdfIn PDF document text
  • https://petandpuppies.com/userfiles/file/46943601664.pdfIn PDF document text
  • http://kechengchem.com/upload/files/kesonamaluxufef.pdfIn PDF document text
  • https://klubkanine.com/home/klub/public_html/ckfinder/userfiles/files/77615283402.pdfIn PDF document text
  • https://wspaperbag.com/userfiles/file/16759171759.pdfIn PDF document text
  • http://xn----7sbbbizu2bxaod.xn--p1ai/userfiles/file/28073303586.pdfIn PDF document text
  • https://loyallcanada.com/editor_files/file/bowoneveguwejezifoges.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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