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://medvor.ru/uplcv?utm_term=the+word+courtesy PDF link annotation

  • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/qlqdctbbb1voqsdqq5gti740a3/wojuzefeweni.pdfIn PDF document text
  • https://rajaunited.com/contents/files/68931401606.pdfIn PDF document text
  • http://minhanh.com/files/surifemigin.pdfIn PDF document text
  • http://tkhomedeco.com/assets/uploads/ckedit/files/20210702181231.pdfIn PDF document text
  • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e81e8cb2b7.pdfIn PDF document text
  • https://www.keystonecare.co.uk/wp-content/plugins/super-forms/uploads/php/files/17a562be7b3e69f42ae55414685f2ff7/zuzalidasi.pdfIn PDF document text
  • https://law.myvzl.com/wp-content/plugins/super-forms/uploads/php/files/2enjm0ote7qqqgtmlt3qehd3ln/rumemif.pdfIn PDF document text
  • http://mywymc.com/userfiles/file/95081898603.pdfIn PDF document text
  • https://alfa-pechati.ru/wp-content/plugins/super-forms/uploads/php/files/309c3483abb436d9d9c0843517255961/74272701247.pdfIn PDF document text
  • http://ambulatorioveterinarioilghirlandaio.it/userfiles/files/96757791668.pdfIn PDF document text
  • https://www.skyline-recruiting.com/wp-content/plugins/super-forms/uploads/php/files/a6fdd47eeb97b951dac2e67084420c37/fufalijavexozupifuduge.pdfIn PDF document text
  • https://livres-d-art.com/ckfinder/userfiles/files/56617084705.pdfIn PDF document text
  • http://xnucleus.com/members//member_images/files/sepogipowuwejofor.pdfIn PDF document text
  • https://bnbcostaverde.it/userfiles/file/godolidex.pdfIn PDF document text
  • http://christschoolblr.in/userfiles/file/82305009962.pdfIn PDF document text
  • https://rdsdealers.com/ckfinder/userfiles/files/nawawiramategagufoboxudaw.pdfIn PDF document text
  • http://crystalnymph.by/wp-content/plugins/super-forms/uploads/php/files/952741beb2116dcbb144ce2db7c7ad4f/86073195840.pdfIn PDF document text
  • http://www.colegiometa.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/160c9783dd0efb---rutiwimuzepikanuxo.pdfIn PDF document text
  • http://abwlanham.com/uploads/files/46401945445.pdfIn PDF document text
  • http://www.immiflex.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607657f8a8f42---sonekegaxodelurutowovofob.pdfIn PDF document text
  • http://www.letnifestiwal.pl/ckfinder/userfiles/files/17302942933.pdfIn PDF document text
  • http://smartcookieacademy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088a8640b2bf---26742226931.pdfIn PDF document text
  • http://architettorobertafasola.eu/userfiles/files/13807713397.pdfIn PDF document text
  • https://mn-lawfirm.com/box/userfiles/file/97271622822.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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