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://infrive.ru/uplcv?utm_term=calendar+year+100 PDF link annotation

  • http://bitite.lv/media/txt/122/file/64552550756.pdfIn PDF document text
  • http://www.medicalalliedtraining.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d1a9d68d72---saradugakanosifonulogadud.pdfIn PDF document text
  • https://hotelharmika.com/assets/userfiles/files/28388423899.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/47omk485sdmrm8mof2lp0thhf7/55382373419.pdfIn PDF document text
  • https://gulceoyunlar.com/calisma2/files/uploads/litakine.pdfIn PDF document text
  • https://wilsonbarrera.com/inicio/wp-content/plugins/formcraft/file-upload/server/content/files/1613915aade710---13001362119.pdfIn PDF document text
  • http://elard-group.com/ckfinder/userfiles/files/vitolexagivezovunogo.pdfIn PDF document text
  • http://hb-hospital.com/file_upload/fck_upfile/file/47475351252.pdfIn PDF document text
  • http://vibestedu.com/_UploadFile/Images/file/37310570781.pdfIn PDF document text
  • https://equalitas.es/userfiles/file/rituwivilujuwaxo.pdfIn PDF document text
  • http://alrabbancapital.com/file/files/74774166252.pdfIn PDF document text
  • http://pm-property.pl/userfiles/file/92889790726.pdfIn PDF document text
  • https://mabuksusu.com/contents/files/dazanoner.pdfIn PDF document text
  • http://fruhmann-elektrotechnik.at/28686844274.pdfIn PDF document text
  • http://www.americaninvest.net/upls/files/sodesepepudolirikafolexam.pdfIn PDF document text
  • http://www.viksexteriors.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135509e1b2ef---13512642134.pdfIn PDF document text
  • https://stichtingech.org/ckfinder/userfiles/files/39424544206.pdfIn PDF document text
  • https://birudongker.com/contents/files/95099312515.pdfIn PDF document text
  • http://salman-group.com/userfiles/file/24299172008.pdfIn PDF document text
  • https://autotoner123.com/home/autotone/public_html/ckeditortest_WORKING/ckfinder/userfiles/files/21151231567.pdfIn PDF document text
  • http://topp.pl/_topp/file/86241137039.pdfIn PDF document text
  • http://propertiesforrent.com/userfiles/file///64440775070.pdfIn PDF document text
  • http://prasongp.com/file_media/file_image/file/72374643321.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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