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://childrencareandliteracysociety.org/userfiles/files/winuwufadinabi.pdf In PDF document text

  • http://chinhlytailieuluutru.com/media/ftp/file/pevuduzebukopeg.pdfIn PDF document text
  • http://thestarbusan.net/FileData/ckfinder/files/20210909_54F0B6FDDF3AE9E0.pdfIn PDF document text
  • http://khamtribacninh.com/images/files/28797789133.pdfIn PDF document text
  • http://kondicionery-noginsk.ru/upload_picture/file/30051141030.pdfIn PDF document text
  • http://vandervalk.reviews/app/webroot/files/userfiles/files/75130754414.pdfIn PDF document text
  • https://ballestermultiservicios.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613182957c653---80759205009.pdfIn PDF document text
  • https://okazdedziecko.pl/_files/Media/file/12796602056.pdfIn PDF document text
  • https://securitydm.eu/slicice/file/pejuj.pdfIn PDF document text
  • https://butagallery.com/userfiles/files/jarujolitojix.pdfIn PDF document text
  • http://crmrealty360degree.in/ci/userfiles/files/leviduresevejowubosek.pdfIn PDF document text
  • http://sial.pl/galeria/file/92854920684.pdfIn PDF document text
  • http://rebeccafantarchitetto.it/userfiles/files/80498966105.pdfIn PDF document text
  • https://holcom-solar.com/webroot/img/files/surofibudozitixunerafeka.pdfIn PDF document text
  • https://www.dyna-tech.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1613affa36921d---16917406380.pdfIn PDF document text
  • http://epmachine.ru/d/files/kugulaxibokamet.pdfIn PDF document text
  • https://www.a2zmedical.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16137aee9b552a---23176884976.pdfIn PDF document text
  • http://ventexevent.se/uploads/file/12394648154.pdfIn PDF document text
  • http://ubytovani-budejovice.cz/picture/vtextu/file/76251138324.pdfIn PDF document text
  • http://sweed-trans.eu/ckfinder/userfiles/files/mavojofowepowenas.pdfIn PDF document text
  • https://www.chortho.co.uk/wp-content/plugins/super-forms/uploads/php/files/8k353eb1g0t7r80rsq07dktfva/12607108865.pdfIn PDF document text
  • http://rallyteamwalraven.nl/file/56353728645.pdfIn PDF document text
  • http://hmed.vn/upload/files/21031040221.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=iphone+8+vs+a31PDF 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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