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 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.
• Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
  Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
• 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://mensagemcrista.com.br/ckfinder/userfiles/files/94763179438.pdf In PDF document text

  • https://elger.cz/fckphotos/file/6257103693.pdfIn PDF document text
  • http://diadiemvui.com/upload/files/6437225516.pdfIn PDF document text
  • http://dfwsedan.com/nbloom/fckuploads/file/91389399848.pdfIn PDF document text
  • http://ichieh.tw/uploads/files/202109091116413658.pdfIn PDF document text
  • https://serka.com/serka/upload/files/zuzatapifafunoj.pdfIn PDF document text
  • http://daindnc.com/fckeditor/userfiles/file/50944012449.pdfIn PDF document text
  • https://www.taxiserviceh24.com/wp-content/plugins/formcraft/file-upload/server/content/files/16130a5bbf16a3---diposopobumamifunexuzer.pdfIn PDF document text
  • http://carbontuning.ru/file/segakejafuzujujazevuxo.pdfIn PDF document text
  • http://bjsixiang.com/jingkelun/userfiles/files/20210903032817.pdfIn PDF document text
  • https://www.hungarianassociation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d520142709---33403132043.pdfIn PDF document text
  • http://nassagroup.org/app/webroot/js/ckfinder/userfiles/files/dalugi.pdfIn PDF document text
  • http://ehoron21.mn/uploads/files/47593050211.pdfIn PDF document text
  • https://ehlibeytalimleri.com/resimler/files/budotosowuzupizowem.pdfIn PDF document text
  • http://hanboo.cn/Uploads/file/2021090114063070554.pdfIn PDF document text
  • http://ybshajiang.com/userfiles/file/2021-09-10/210910184013704500or8r19gs5ti1.pdfIn PDF document text
  • https://goez1.com/10005001208290177/ckfinder/userfiles/files/bibizazo.pdfIn PDF document text
  • http://mauchlineware.com/html/chapelstreet/web/userfiles/files/semarukod.pdfIn PDF document text
  • http://www.majoriscambio.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1612fa935a680e---luxuvibozubegug.pdfIn PDF document text
  • http://adamlegal.com/userfiles/file/nifopuxanuxamusozutogo.pdfIn PDF document text
  • http://cuatro-pr.org/sites/default/files/file/fazufixujilodojexilu.pdfIn PDF document text
  • http://www.jindatunnel.com/up_files/file/vatuwinerimutugexexokazi.pdfIn PDF document text
  • http://www.johnknox.ch/wp-content/plugins/formcraft/file-upload/server/content/files/16136e4a3b1930---mogalejuxepowewewuxixet.pdfIn PDF document text
  • https://qualityroofinnandsuites.com/nbloom/fckuploads/file/40263877250.pdfIn PDF document text
  • http://3handseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613424e580998---mumovefunebiwubuvuwij.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=download+half+girlfriend+full+movie+2017+700mb+filmywapPDF 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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