Malicious PDF — malware analysis report

Heuristics 8

• ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
• 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.
• 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.
• Embedded JS stream low PDF_JS
  PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
• 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://studybrilliant.online/app/webroot/img/userfiles/file/91324177715.pdf In PDF document text

  • http://bilmatbasim.com/userfiles/file/webigokapufunebelodit.pdfIn PDF document text
  • https://vashadvokat82.ru/wp-content/plugins/super-forms/uploads/php/files/5756fdc18533aa856a1ff54dfafdc4a2/39209964550.pdfIn PDF document text
  • http://www.leads-bd.org/app/webroot/js/ckfinder/userfiles/files/42529835928.pdfIn PDF document text
  • https://digireg.li/upload/36343715683.pdfIn PDF document text
  • http://frangarcia.eu/upload/file/sizifasozipopesetagileso.pdfIn PDF document text
  • http://yanarfabrics.com/firma/files/77627995084.pdfIn PDF document text
  • https://chetanaus.org/bheru/uploadfiles/file/fironewapuzizelaxudilu.pdfIn PDF document text
  • https://villanakarin.com/userfiles/files/80646750870.pdfIn PDF document text
  • http://tfh-filter.hu/_user/file/vijemomevumofavo.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/4btfdgkqddmojhgroskmrh1jj5/medowiwinutavevixoxonu.pdfIn PDF document text
  • http://deforma.it/userfiles/files/21309883732.pdfIn PDF document text
  • https://fa-vietnam.com/webroot/img/files/wuwomarugujinubegafa.pdfIn PDF document text
  • http://pferdefreunde-brueckenhof.de/sites/default/files/userfiles/file/33763574029.pdfIn PDF document text
  • https://www.utn.ac.cr/sites/default/files/files/35831261748.pdfIn PDF document text
  • https://rowsontw.com/shopadmin/upload/files/39437398248.pdfIn PDF document text
  • https://www.vibrationmonitoring.asia/wp-content/plugins/formcraft/file-upload/server/content/files/161364bdb98163---bolagataruz.pdfIn PDF document text
  • http://cmtoolsrental.com/user_img/files/kuxisadedosaxitagexuxison.pdfIn PDF document text
  • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613247a843588---16647836573.pdfIn PDF document text
  • http://gazomotor.com/allinone/file/27379843324.pdfIn PDF document text
  • http://fohow77.ru/upload/file/49813280521.pdfIn PDF document text
  • https://santehsevast.ru/userfiles/files/13713933042.pdfIn PDF document text
  • http://hpworld.hu/data/pic/Image/file/10695181910.pdfIn PDF document text
  • http://around-sicily.net/userfiles/file/lotelabaledagirukox.pdfIn PDF document text
  • https://jamiatulbanat.in/wp-content/plugins/formcraft/file-upload/server/content/files/16134e72c5feeb---36184910806.pdfIn PDF document text
  • http://bubb.cn/up_file/file/binuwugirigonunipevatogod.pdfIn PDF document text
  • https://phukienbep.net/media/files/45794054218.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=10mb+games+downloadPDF 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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