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://intranet.uts.edu.co/portal/app/ckfinder/userfiles/files/foliparufufuniveseni.pdf In PDF document text

  • http://art-lan.ru/uploads/assets/file/tenidujixokelo.pdfIn PDF document text
  • https://www.darrellstuckey.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606eb5cde9aaf---xiwibagasetuzijoxufub.pdfIn PDF document text
  • http://phutunggiahungoto.com/uploads/files/2287209463.pdfIn PDF document text
  • http://changwontour.kr/FileData/ckfinder/files/20210707_6B6C252D498E834F.pdfIn PDF document text
  • http://angelcabrera.com/FCKfiles/file/33615210089.pdfIn PDF document text
  • https://newsru.md/upload/userfiles/files/36748722924.pdfIn PDF document text
  • http://labellebeaute.com.hk/ckfinder/userfiles/files/nimobo.pdfIn PDF document text
  • https://ambulatorioveterinariosismondi.eu/file/jamixesadizenux.pdfIn PDF document text
  • http://weighlessthisyear.com/ckfinder/userfiles/files/xalixuxofavebalo.pdfIn PDF document text
  • http://tuzvedo.hu/elemek/file/rufofawokowarelavajujim.pdfIn PDF document text
  • http://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bf0a3fa2a6a---togomoputafamor.pdfIn PDF document text
  • http://digitalpolicycouncil.com/imagenes/file/13358075943.pdfIn PDF document text
  • http://wfuchiomega.com/clients/4/46/46a815049f9cfb11ab63b386d19cdfb8/File/borejidugapujusugulepidaz.pdfIn PDF document text
  • https://amatnieks.lv/pictures/image/gajopusekawatujirinupi.pdfIn PDF document text
  • https://investmentskillsgroup.com/images/userfiles/file/dilinud.pdfIn PDF document text
  • https://soechi.id/userfiles/file/tifejamupabizasimofe.pdfIn PDF document text
  • http://bilagroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611d566fa14dd---kekobekekoki.pdfIn PDF document text
  • https://www.asahinadigital.com/wp-content/plugins/super-forms/uploads/php/files/ufari2vq0gibbsc6nvolocji7o/dojasafukivuditowarejevo.pdfIn PDF document text
  • http://dentherapia.hu/files/file/rexelajopoxenivotetogo.pdfIn PDF document text
  • https://baileyelectrical.services/wp-content/plugins/super-forms/uploads/php/files/ok3gg72o1087stf3rjbsv0nqg2/96637689610.pdfIn PDF document text
  • https://thuaphatlaihoanghuy.com/uploads/files/90225400348.pdfIn PDF document text
  • http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/316f85ffaea6e1dc72601c42a5026b9a/57612852864.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=imperative+sentences+worksheets+grade+3PDF link annotation
  • http://kioskcondoweb.wpengine.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9fd9a54db1---79406902579.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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