Malicious PDF — malware analysis report

Heuristics 7

• ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
• Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
  Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
• 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://aptitudeclass.com/ckfinder/userfiles/files/90214007950.pdf In PDF document text

  • http://shortguycentral.com/ck_uploads/files/44168846001.pdfIn PDF document text
  • https://bomnuocebara.com/quangbasanpham/app/webroot/upload/image/files/92438992507.pdfIn PDF document text
  • http://elosc.com/upFile/file///ITX202109200621231547.pdfIn PDF document text
  • https://www.cfo-search.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140e30150fcd---xefebedumexomuxumugovobit.pdfIn PDF document text
  • http://sklepjola.pl/userfiles/file/49414426672.pdfIn PDF document text
  • http://studiodispirito.it/userfiles/file/busugegibidesinoraga.pdfIn PDF document text
  • https://ancoraeducacion.com/images/3094199986.pdfIn PDF document text
  • https://tierrettung-in-katalonien.org/ckfinder/userfiles/files/65361024102.pdfIn PDF document text
  • https://tessuno.com/upload/files/6147d2ca5cb15.pdfIn PDF document text
  • https://lifecareproduct.in/ckfinder/userfiles/files/82427410903.pdfIn PDF document text
  • https://notofthisgalaxy.com/wp-content/plugins/super-forms/uploads/php/files/lfegqncdu4pkq7kp599n8kbpgc/sanudekenuzozinep.pdfIn PDF document text
  • http://zs-oilfieldequip.ru/d/files/52607792290.pdfIn PDF document text
  • http://dsacare.com/admin/uploads/file/zuxidisesuditikib.pdfIn PDF document text
  • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/671f99692e32e8fa3c6fd6206dd1fa87/fadux.pdfIn PDF document text
  • https://rffsev.ru/wp-content/plugins/super-forms/uploads/php/files/076891d6fbfadd8d4ccf5338db9556da/74759757934.pdfIn PDF document text
  • http://nnk.gr/wp-content/plugins/formcraft/file-upload/server/content/files/16140ed42d8b1c---nelebibusejuresexujotimi.pdfIn PDF document text
  • http://www.39koratmachinery.com/file_upload/files/3853767189.pdfIn PDF document text
  • http://sxnqx.org/upload/file/Fl202109170003394103.pdfIn PDF document text
  • https://www.potterycommercials.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1613b31af987be---gofumunuwedov.pdfIn PDF document text
  • http://www.wallisandemmanuel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135f27380a96---goruz.pdfIn PDF document text
  • https://digireg.se/upload/44921029226.pdfIn PDF document text
  • https://www.verimevzabavu.cz/ckfinder/userfiles/files/dulekofomus.pdfIn PDF document text
  • http://casaledellasignora.it/userfiles/files/73469845359.pdfIn PDF document text
  • https://hawkseyetravels.com/assets/ckfinder/userfiles/files/supilawap.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=chrome+webview+debuggingPDF 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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