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
• 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.
• QR-code redirect lure medium SE_QR_LURE
  Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
• 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://chcial.ru/uplcv?utm_term=android+11+news PDF link annotation

  • http://w-w.cn/isee/pfm/cms/uploadfile/fck/file/61765245238.pdfIn PDF document text
  • http://rbc-bezorgdiensten.nl/upload/dutokaxujesisilatoko.pdfIn PDF document text
  • https://comodee.com/wp-content/plugins/formcraft/file-upload/server/content/files/161312fbba16c4---7486158062.pdfIn PDF document text
  • http://www.louthadventures.ie/wp-content/plugins/formcraft/file-upload/server/content/files/1613aec100e9ad---60409112274.pdfIn PDF document text
  • http://collegium-connect.nl/ckupload/files/14853108504.pdfIn PDF document text
  • http://www.fullertherapy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16131ca15e99ce---21614770799.pdfIn PDF document text
  • https://peiitw.com/Upload/ckeditor/files/rugabewitarepikesuzilus.pdfIn PDF document text
  • http://hongphuc.vn/userfiles/file/3736569743.pdfIn PDF document text
  • http://hotnews.md/upload/userfiles/files/59338781057.pdfIn PDF document text
  • http://tangiahoang.vn/Images_upload/files/255568230.pdfIn PDF document text
  • http://sabaispa.net/userfiles/file/joriboboniwijetadeki.pdfIn PDF document text
  • https://nutritie-metabolism-sanatate.ro/app/webroot/files/userfiles/files/53299694181.pdfIn PDF document text
  • http://topopentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613bb39fc4d0b---nukoziteriva.pdfIn PDF document text
  • https://obermeyer-modemarkt.de/upload/file/2085033206.pdfIn PDF document text
  • https://www.medicalbi.com/ckfinder/userfiles/files/bujanipibubinale.pdfIn PDF document text
  • http://radtel-sport.pl/userfiles/file/sitanimejupe.pdfIn PDF document text
  • http://www.kindytennis.com/wp-content/plugins/formcraft/file-upload/server/content/files/16130527f6ef1a---piwefetogitujeperogefomud.pdfIn PDF document text
  • https://wcdt.co.th/wp-content/plugins/super-forms/uploads/php/files/als755djq6p7r65c9bl6q76gq2/pajofojowetewejulemuf.pdfIn PDF document text
  • http://vdgairconditioning.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1613f75e87f4b9---kijuwetudeliwanojakaj.pdfIn PDF document text
  • https://cqhuaan.myhost360.cn/upload/files/09-01-21-27-39-74.pdfIn PDF document text
  • http://melissajacksonmd.com/wp-content/plugins/formcraft/file-upload/server/content/files/161446057122c6---11871399374.pdfIn PDF document text
  • http://uzks.hr/upload/datoteke/24378834563.pdfIn PDF document text
  • http://ansing.nl/userfiles/file/sodinolanotudokili.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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