Malicious PDF — malware analysis report

Heuristics 7

• 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 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://pistant.ru/uplcv?utm_term=hammer+anvil+and+stirrup+in+ear PDF link annotation

  • http://yuseigachi.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16140bd145df34---95575866477.pdfIn PDF document text
  • https://www.web2business.pt/wp-content/plugins/formcraft/file-upload/server/content/files/1612ef1f1b7902---41702991523.pdfIn PDF document text
  • https://honkakuji.jp/honkakuji/images/ckfinder/files/vowusizopapegitab.pdfIn PDF document text
  • http://uran-berlin.com/userfiles/file/zorenilozepexonutotovulu.pdfIn PDF document text
  • http://www.marcelasemper.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615b238d55155---36714928846.pdfIn PDF document text
  • https://ixiu-23.com/uploads/files/202109260715104440.pdfIn PDF document text
  • http://amtusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132e1c7ce365---66114194463.pdfIn PDF document text
  • http://lsphc.com/userfiles/file///98514357146.pdfIn PDF document text
  • https://itracmediav5.com/ckfinder/userfiles/files/paputobinurobegimuxibaduv.pdfIn PDF document text
  • http://waycreon.net/bhaskar/yii/upload/files/24998427875.pdfIn PDF document text
  • http://emekyesiltepe.net/images_upload/files/kuxitigenexerezi.pdfIn PDF document text
  • http://sinproval.it/userfiles/files/44528259825.pdfIn PDF document text
  • https://m-isc.com/userfiles/file/37986494766.pdfIn PDF document text
  • http://sk4education.com/ckfinder/userfiles/files/99698554760.pdfIn PDF document text
  • http://hbinpol.cz/media/images/upload/file/fujaduxazalo.pdfIn PDF document text
  • http://zs-g.jp/app/webroot/js/ckfinder/userfiles/files/xuvodume.pdfIn PDF document text
  • https://brunoamaranti.it/wp-content/plugins/super-forms/uploads/php/files/eij25nii2aphn30f4he4udkj31/tazaxozoxobuburepamom.pdfIn PDF document text
  • https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/552sm6naf6vdo8mt15ef3ule9a/75744481832.pdfIn PDF document text
  • https://doitsolutions.co/wp-content/plugins/super-forms/uploads/php/files/3382cbb2e4c9d179439397e2f2ee4654/zamiluzolovopakaxijunetan.pdfIn PDF document text
  • http://goldsunjsc.com/upload/files/23097952932.pdfIn PDF document text
  • http://bioident.pl/photos_fck/file/genixisuk.pdfIn PDF document text
  • https://cs168.tw/upfiles/editor/files/noxiz.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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