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 to algorithmically-generated URL high PDF_RANDOM_URL_LINK
  PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
• 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://coretry.ru/uplcv?utm_term=c+language+complete+course+pdf PDF link annotation

  • https://admonks.ru/wp-content/plugins/super-forms/uploads/php/files/4ffd0b0064049dfcc7713fc06bacf457/68767434371.pdfIn PDF document text
  • https://stayatrosetta.com/wp-content/plugins/super-forms/uploads/php/files/ibkjvtccjec2vudr0fdpr4igcj/wiremupawow.pdfIn PDF document text
  • https://maisonforville.be/documents/file/28677765675.pdfIn PDF document text
  • http://bandenplaats.nl/cmsimages/file/jetukizi.pdfIn PDF document text
  • http://daimarconstrucciones.com/images/admin/file/rurulanisiwe.pdfIn PDF document text
  • http://daiichilogistics.com/uploads/news_file/bafuxebusosoz.pdfIn PDF document text
  • http://petraifevronii.ru/ckfinder/userfiles/files/zudizesiko.pdfIn PDF document text
  • http://headlinesdinerla.com/uploads/files/dulatobebebaxovoromozuroj.pdfIn PDF document text
  • https://alismobile.co.uk/wp-content/plugins/super-forms/uploads/php/files/08641658d7ba22111ed782853f9c7c05/xipik.pdfIn PDF document text
  • https://mrmusicfoundation.org/wp-content/plugins/super-forms/uploads/php/files/qe19pp1kaolhf1qaau8cda7b9h/36434150265.pdfIn PDF document text
  • http://vivaibonomo.it/userfiles/files/65281875553.pdfIn PDF document text
  • http://sukhonthip.com/file_media/file_image/file/regetaloxugurewujonawura.pdfIn PDF document text
  • https://penzionradvanice.cz/res/file/rekepariguxobivegoxivu.pdfIn PDF document text
  • https://zazilha.com.mx/wp-content/plugins/super-forms/uploads/php/files/31b8ec14d3bf4ca1b7d229725b5fc0f5/8192133554.pdfIn PDF document text
  • http://sztarmedia.hu/_user/file/rofujitejavapud.pdfIn PDF document text
  • http://sculecuacumulator.ro/app/webroot/files/userfiles/files/japurulusarip.pdfIn PDF document text
  • http://alvit-bk.ru/userfiles/file/dibirabudadokuvod.pdfIn PDF document text
  • https://forkidsvietnam.vn/wp-content/plugins/super-forms/uploads/php/files/p6v728e52qhv7ieuca0p2811d3/6790884975.pdfIn PDF document text
  • http://chromowane.com/userfiles/file/30389322107.pdfIn PDF document text
  • https://rieker-consulting.eu/files/file/polatuxibepobo.pdfIn PDF document text
  • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ee1aa57721d---51918935766.pdfIn PDF document text
  • https://drmiamiconnect.com/wp-content/plugins/super-forms/uploads/php/files/58a808a8f537960759d49fcd6d3d1f7c/63765740011.pdfIn PDF document text
  • http://carraracucinecomponibilitrapani.it/userfiles/files/43221075523.pdfIn PDF document text
  • https://kotata-zlin.cz/obr/clanky/file/feruwize.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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