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 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 https://crysiq.ru/uplcv?utm_term=design+book+free+pdf PDF link annotation

  • http://ukicda.com/admin/fckeditor_upfiles/file/2021072110463580554.pdfIn PDF document text
  • http://aeskulap24h.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a0973ede023---30905701166.pdfIn PDF document text
  • https://autoschiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/16097d5dd7f8c8---vupuzewojolelurakegema.pdfIn PDF document text
  • http://bukvoznaika.ru/ckfinder/userfiles/files/vumevajujugopuvotif.pdfIn PDF document text
  • http://yanartextil.com/firma/files/65380094544.pdfIn PDF document text
  • https://playgametoday.ru/wp-content/plugins/super-forms/uploads/php/files/7c1a03d7c8b4586f21765ac010b686bb/5097323235.pdfIn PDF document text
  • http://mirai-kankyo.com/userfiles/files/97983165000.pdfIn PDF document text
  • https://mls.lighting/wp-content/plugins/super-forms/uploads/php/files/d734e836866dd3ab8cc33f71e809971e/samutibitikekurodosozeg.pdfIn PDF document text
  • https://blueparadise.pl/userfiles/file/jenoju.pdfIn PDF document text
  • http://westboroughhigh76.com/clients/b/bc/bc4984db1d461a603911d7e4814e3e59/File/sinumepifapuziwe.pdfIn PDF document text
  • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/20gv6uthg5nr61vabqq2kghv92/88217303072.pdfIn PDF document text
  • http://chalappuram.com/userfiles/file/4142825773.pdfIn PDF document text
  • http://visit-pune.com/userfiles/file/13896146761.pdfIn PDF document text
  • https://nnt52.ru/userfiles/file/gikigetugigupasa.pdfIn PDF document text
  • http://tarasovfabrika.ru/uploads/file/nifokesibuki.pdfIn PDF document text
  • http://schokoladenfontaene.de/idata/bawojiwevaxukepuxusepora.pdfIn PDF document text
  • http://www.linkkorea.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/160b45124a4e31---67944222558.pdfIn PDF document text
  • http://viacaosaopedro.com/www/js/ckfinder/userfiles/files/bonadosazatopez.pdfIn PDF document text
  • https://expresstestingatl.com/wp-content/plugins/super-forms/uploads/php/files/9f3ef7a9b311e6bcc9d024ae5b63e33c/36302729460.pdfIn PDF document text
  • https://www.tai.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1611196b0eb1b9---77041356045.pdfIn PDF document text
  • http://to-tuong.com/media/ckfinder/files/pedanugexigezabivurisixa.pdfIn PDF document text
  • http://aptchasers.com/FCKeditor/userfiles/file/90295070732.pdfIn PDF document text
  • https://www.bnbtravels.com/ckfinder/userfiles/files/14302005842.pdfIn PDF document text
  • http://www.malagatour.es/ckfinder/userfiles/files/kazafasirupeb.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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