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://synerhu.ru/uplcv?utm_term=how+to+block+a+website+on+android PDF link annotation

  • https://stayinbranson.com/ckfinder/triplebuserfiles/file/60105269470.pdfIn PDF document text
  • http://4x4autok.hu/userfiles/files/89826663720.pdfIn PDF document text
  • http://www.tecnologycenter.com/admin/uploaded/fck/file/vowafanezalegej.pdfIn PDF document text
  • http://modelkyujin.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612fdb4905971---zigilopafojix.pdfIn PDF document text
  • https://diedacorporation.net/freesiafiles/file/vusobuxatotebavinugapuxo.pdfIn PDF document text
  • http://cameranichietsu.com/luutru/files/44039083602.pdfIn PDF document text
  • http://www.barbazan-debat.fr/ckfinder/userfiles/files/6405156973.pdfIn PDF document text
  • http://www.poliklinika-hb.cz/userfiles/file/4280961817.pdfIn PDF document text
  • https://piphoto.tw/uploads/files/202109061114504932.pdfIn PDF document text
  • https://hotnews.md/upload/userfiles/files/5313618718.pdfIn PDF document text
  • http://feriaalainversa.com/uploaded/files/kuwigimaf.pdfIn PDF document text
  • http://miskolciharsona.hu/pictures/file/40681400426.pdfIn PDF document text
  • https://bititechnika.com/uploads/file/zokowapune.pdfIn PDF document text
  • http://autoset66.ru/admin/ckfinder/userfiles/files/99319203895.pdfIn PDF document text
  • http://haihengpharm.com/upload/files/53546622155.pdfIn PDF document text
  • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613829b881eba.pdfIn PDF document text
  • https://reviewz.eu/app/webroot/files/userfiles/files/34372928439.pdfIn PDF document text
  • http://knowleangling.co.uk/ckfinder/userfiles/files/92373190323.pdfIn PDF document text
  • http://discarga.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135c51660a27---93550928221.pdfIn PDF document text
  • http://reclaimsplus.com/wp-content/plugins/super-forms/uploads/php/files/959769a9210ec84718eecc99e20d7685/takavijebeki.pdfIn PDF document text
  • http://mirrorlink.com/public/files/files/lovizatewijozizoparijipij.pdfIn PDF document text
  • http://rayer.cn/d/files/70545487200.pdfIn PDF document text
  • http://wohntraumgmbh.at/xupova.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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