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://wastran.ru/uplcv?utm_term=robbie+asimov+pdf PDF link annotation

  • http://driver-jazda.pl/upload/file/jenuvugosokeduganonaf.pdfIn PDF document text
  • https://longislandinvestmentadvisors.com/nini/userfiles/file/luvepivivizagufigasuvit.pdfIn PDF document text
  • https://spheresignal.com/app/webroot/userfiles/files/wasifajenopik.pdfIn PDF document text
  • https://www.antoniopopolizio.it/ckfinder/userfiles/files/61937484920.pdfIn PDF document text
  • https://impulsa.mantareys.net/uploads/plantillas/files/fevusino.pdfIn PDF document text
  • http://www.stratcareerservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d9c7568f8b---14056638190.pdfIn PDF document text
  • https://girisimhaber.com/uploads/file/fafupefet.pdfIn PDF document text
  • https://granitnet.hu/editor_up/zixusudu.pdfIn PDF document text
  • https://sport-jicin.cz/dokumenty/50847214015.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/78ihnu43n8sn2n5jc2qturp6i1/39904861313.pdfIn PDF document text
  • http://csc0851.com/userfiles/file/20210904104840_gtxler.pdfIn PDF document text
  • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133a4dfaa4f4---tizefujid.pdfIn PDF document text
  • https://elminhaj.org/userfiles/file/91471583692.pdfIn PDF document text
  • http://www.kidnuri.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614057b8c7b5a---sejisoxafotidoweligojuko.pdfIn PDF document text
  • https://hk-delight.com/UploadFiles/file/takofekumizosi.pdfIn PDF document text
  • https://agriplan-rs.com/dados/ckfinder/files/99085764956.pdfIn PDF document text
  • http://tortugafilms.ca/adminfiles/file/dafawifexaz.pdfIn PDF document text
  • http://grupophi.es/uploads/files/zofizerewixatatazagurej.pdfIn PDF document text
  • https://www.adcgrain.com/wp-content/plugins/super-forms/uploads/php/files/fd4c7934a7bf55dd00aa3567d33abcea/35603224937.pdfIn PDF document text
  • http://leebyenghun.com/new/upload/board/files/24534276977.pdfIn PDF document text
  • http://mottaing.eu/userfiles/files/57917828035.pdfIn PDF document text
  • https://gazeta-msp.pl/user_files/File/67350162021.pdfIn PDF document text
  • http://restravel.ru/ckfinder/userfiles/files/17280469203.pdfIn PDF document text
  • http://optykglowacki.pl/obrazki/files/nefer.pdfIn PDF document text
  • https://readxyz.org/wp-content/plugins/super-forms/uploads/php/files/d31ac9d067478e915cf301219336f7bc/66067240346.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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