Malicious PDF — malware analysis report

Heuristics 6

• 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.
• QR-code redirect lure medium SE_QR_LURE
  Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
• 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://www.hed-endo.hr/wp-content/plugins/formcraft/file-upload/server/content/files/161300e677fa5d---guxapoxagowumukaredixaruj.pdf In PDF document text

  • https://hr-serdahel.hu/images/file/gogutiz.pdfIn PDF document text
  • https://valenciamaids.com/userfiles/files/43903501403.pdfIn PDF document text
  • http://bright-inter.com/file_media/file_image/file/sazesuresotupekurubil.pdfIn PDF document text
  • https://maydangson.com/vietkiendo/upload/file/34769177825.pdfIn PDF document text
  • https://citronel.com/userfiles/files/sikivimopedonegogigaz.pdfIn PDF document text
  • https://mimpishiosatu.com/contents/files/64279586189.pdfIn PDF document text
  • http://www.hptindia.com/wp-content/plugins/formcraft/file-upload/server/content/files/161396a797e9db---fejatugokumujiwabi.pdfIn PDF document text
  • http://kuppersbusch.hu/userfiles/files/kuxowulimeg.pdfIn PDF document text
  • http://land89.com/ckupload/files/86796961909.pdfIn PDF document text
  • https://fminterativa.net/cms/plugins/ckfinder/userfiles/files/88754035411.pdfIn PDF document text
  • http://pronobile.com/catalog/file/gefulinekob.pdfIn PDF document text
  • https://bandotrading.com/uploads/file/27254269269.pdfIn PDF document text
  • http://www.maarsehoveniers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16139da7cd9129---bopirak.pdfIn PDF document text
  • https://aryaayur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613993b1da192---33058183624.pdfIn PDF document text
  • http://wsm.hk/images/uploadfiles/file/nusixifogefofugaz.pdfIn PDF document text
  • http://headlinesdinerla.com/uploads/files/viperibezojuzemesis.pdfIn PDF document text
  • https://njsolarpower.com/wp-content/plugins/super-forms/uploads/php/files/7d530d0a603d02bba366f998276ff7d7/vaposi.pdfIn PDF document text
  • http://stickerbarcode.com/file_media/file_image/file/gumep.pdfIn PDF document text
  • https://anukulagrotech.com/userfiles/file/37602400128.pdfIn PDF document text
  • http://gwardiajuvenia.pl/zdjecia/fck/file/60290514094.pdfIn PDF document text
  • http://asqcert.net/files/files/94505722205.pdfIn PDF document text
  • http://www.gradur.ba/wp-content/plugins/formcraft/file-upload/server/content/files/1612ef2072b64c---wasirudotosen.pdfIn PDF document text
  • https://renault-service.com/userfiles/mapojomokopafike.pdfIn PDF document text
  • http://goodtraefarm.com/ckupload/files/62688966746.pdfIn PDF document text
  • http://amtusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136b3fa381c7---tugiseridewum.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=scan+the+qr+code+with+your+phonePDF 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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