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 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://infrive.ru/uplcv?utm_term=perth+dinghy+sailing+club PDF link annotation

  • http://oumkua.com/userfiles/file/64743213027.pdfIn PDF document text
  • http://tbff-bygg.se/img/files/90832691064.pdfIn PDF document text
  • https://coolinterier.sk/upload/files/vorosinawevapaxofit.pdfIn PDF document text
  • http://itnetworkconsultingsf.com/helpdesk/app/webroot/img/userfiles/files/96655828357.pdfIn PDF document text
  • https://www.ijdsir.com/ckfinder/userfiles/files/72661163660.pdfIn PDF document text
  • http://kliknetezde.cz/admin/obrazky/file/rolovulipubo.pdfIn PDF document text
  • https://psystat.net/candyticket/uploads/page_images/files/puxisotoxarepijuvi.pdfIn PDF document text
  • http://www.iso-clean.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1613bb146242ea---goxaxedemuxopunozel.pdfIn PDF document text
  • https://cosmopolitanhotelbg.lastrada.bg/uploads/wysiwyg/files/setariwos.pdfIn PDF document text
  • http://diversecityuk.com/userfiles/file/89617741535.pdfIn PDF document text
  • http://mclarenquartz.in/ci/userfiles/files/22760357156.pdfIn PDF document text
  • http://modernplating.com/userfiles/file/negejanuwogetuzugibixotu.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/qgnja3q3nre2p6nenaebeda422/58075821554.pdfIn PDF document text
  • http://phongkhamthienhoa.vn/images/files/41563881790.pdfIn PDF document text
  • http://www.goataxiservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613913c1e4853---13436649125.pdfIn PDF document text
  • http://ediljolli.com/userfiles/files/51041003182.pdfIn PDF document text
  • https://groupunsur4.com/contents/files/85404155352.pdfIn PDF document text
  • https://www.bmo-agencement.fr/ckfinder/userfiles/files/worodifarasugup.pdfIn PDF document text
  • http://asesoriagarpe.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613dee7a5c637---56851195219.pdfIn PDF document text
  • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/9120u16ammbq6jr6ee7vbglv34/zuxufawovurenopotikawedus.pdfIn PDF document text
  • http://www.corazondelsol.es/ckfinder/userfiles/files/56768885078.pdfIn PDF document text
  • http://hardiebase.com/uploads/assets/filefile/kajoxune.pdfIn PDF document text
  • http://pfmconsulting.org/survey/userfiles/files/bujajarupozidedasuwiw.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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