Malicious PDF — malware analysis report

Heuristics 8

• ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
• 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.
• 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 http://ambulatorioveterinariobubiniregini.eu/userfiles/files/naxitopenas.pdf In PDF document text

  • http://school19-zav.ru/userfiles/file/69981432523.pdfIn PDF document text
  • http://capthepcongtrinh.com/uploads/news/files/gisanu.pdfIn PDF document text
  • http://leebyunghun.org/new/upload/board/files/ximunofefagupumise.pdfIn PDF document text
  • https://precisionautoandac.com/wp-content/plugins/super-forms/uploads/php/files/0a22847f1edff8440b855cf85b946487/nuganipoteku.pdfIn PDF document text
  • https://tidaksusah.com/contents/files/kugupiteze.pdfIn PDF document text
  • http://vektor-bezpeki.com/userfiles/files/29412936855.pdfIn PDF document text
  • http://nwatchonline.com/userfiles/file/wekama.pdfIn PDF document text
  • http://ducthoaudio.com/upload/files/48901791000.pdfIn PDF document text
  • http://gildiamasterov.ru/userfiles/file/bijojivu.pdfIn PDF document text
  • http://savalis.ru/userfiles/file/rabezumufuwixivawu.pdfIn PDF document text
  • http://www.lasallelille.com/admin/ckfinder/userfiles/files/24370014885.pdfIn PDF document text
  • https://asiahealthcaredentalcentre.com/ckfinder/userfiles/files/fekuzujetibesefunibas.pdfIn PDF document text
  • http://homeopathyhongkong.cn/files/mariwutiviwabufepekukabeb.pdfIn PDF document text
  • https://gilboamedia.com/userfiles/file/86094024670.pdfIn PDF document text
  • http://barrospizzadb.com/uploads/files/29945787896.pdfIn PDF document text
  • http://kpotplace.com/uploads/files/87582465296.pdfIn PDF document text
  • https://malayalamfoundation.org/admin/my_files/file/faruxemozomiwetapiron.pdfIn PDF document text
  • http://kiemdinhcan.com/Images_upload/files/83549077691.pdfIn PDF document text
  • http://amoy-art.com/Upload/file/25747595576.pdfIn PDF document text
  • http://remontnoedelo.ru/wp-content/plugins/formcraft/file-upload/server/content/files/161458198e5a28---lelenoluzaziram.pdfIn PDF document text
  • https://rebates.forex/wp-content/plugins/super-forms/uploads/php/files/mkcca1vc36f6osl1gp0j05mao4/bezoropewenepizexid.pdfIn PDF document text
  • https://esz.jp/img/editor/files/58702914981.pdfIn PDF document text
  • http://makesomenoise.hu/upload/file/ziken.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=android+5+screenshotPDF 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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