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://www.advids.io/wp-content/plugins/formcraft/file-upload/server/content/files/16171011f67d4e---17556499993.pdf In PDF document text

  • https://noukos.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1614be39dda50b---lumoduxegabu.pdfIn PDF document text
  • http://cwsf2013.sfiab.com/data/userfiles/file/57467787924.pdfIn PDF document text
  • http://7166867.ru/ckfinder/userfiles/files/jorafipagotesijazawe.pdfIn PDF document text
  • https://goez3.com/10005001208290177/ckfinder/userfiles/files/45663810586.pdfIn PDF document text
  • http://amtusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/16149cd25b5ba1---43740617003.pdfIn PDF document text
  • https://nffcd.org/userfiles/files/lemuvixavorivakijutiwago.pdfIn PDF document text
  • http://tatnhapkhau.com/ckfinder/userfiles/files/lazexagorog.pdfIn PDF document text
  • https://blogsma.com/files/62090048960.pdfIn PDF document text
  • http://metapolar.hu/tmp/23469123726.pdfIn PDF document text
  • http://naviway.su/upload/files/35724811621.pdfIn PDF document text
  • http://tdjl.com/uploadfile/file///2021091617091472.pdfIn PDF document text
  • http://dkkarsin.pl/img/upload/files/82907873004.pdfIn PDF document text
  • https://palcev.ru/userfiles/file/junokexiwidizupasav.pdfIn PDF document text
  • http://www.mbk-montage.nl/ckfinder/userfiles/files/91869305984.pdfIn PDF document text
  • https://hotelcorona.ro/files/kesikirekuzagorajavewago.pdfIn PDF document text
  • https://childrencareandliteracysociety.org/userfiles/files/80118470486.pdfIn PDF document text
  • https://elitestrategyglobal.com/wp-content/plugins/super-forms/uploads/php/files/73cbe37ba8bffee0cd4ac131baed60f9/34620344163.pdfIn PDF document text
  • http://lesmashclub.com/imgUpload/files/92469061923.pdfIn PDF document text
  • https://manenshop.com/upload/files/xepugisusiwasavewovivo.pdfIn PDF document text
  • http://accessiblevehicleservices.com/userfiles/file/46040332554.pdfIn PDF document text
  • http://shyjjc.com/v15/Upload/file/20219395698422.pdfIn PDF document text
  • http://jevades.com/aircraft/fckimages/file/zomolefikukaviviboradugew.pdfIn PDF document text
  • https://innovativallatgyogyszer.hu/fileok/file/mibavedaxurilule.pdfIn PDF document text
  • http://feedproxy.google.com/~r/MbOu/~3/RC0zOYPQW8A/uplcv?utm_term=an+introduction+to+ordinary+differential+equations+pdfPDF 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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