Malicious PDF — malware analysis report

Heuristics 8

• 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.
• Embedded JS stream low PDF_JS
  PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
• 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=lakhmir+singh+class+10+physics+solutions PDF link annotation

  • http://anbao.vn/uploads/userfiles/file/82803030499.pdfIn PDF document text
  • https://cffcommunications.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/161445b16570cb---13150521490.pdfIn PDF document text
  • http://lica.plovdivweek.com/js/ckfinder/userfiles/files/93769860231.pdfIn PDF document text
  • http://gzperson.com/uploadfile/files/42269485965.pdfIn PDF document text
  • http://campfirewtx.org/userfiles/file/80462036820.pdfIn PDF document text
  • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/161319fd5545d8---daluxokuxomiwoxi.pdfIn PDF document text
  • http://aeusjtu.pretty-match.com/upload/files/48231988746.pdfIn PDF document text
  • http://ambulatorioveterinarioscapindandrea.it/userfiles/files/fapadudemeraroninomani.pdfIn PDF document text
  • http://handinks.com/ckfinder/images_store/files/5217089379.pdfIn PDF document text
  • https://anbuadidravidarmatrimony.com/ckfinder/userfiles/files/vulevobuzawisuzijad.pdfIn PDF document text
  • http://dija.lv/public/userfiles/file/dowazalirakarajarafew.pdfIn PDF document text
  • https://weeb.nu/userfiles/file/besakevoxizututusebewakex.pdfIn PDF document text
  • http://findmealocalpainter.com/insurazon/admin/userfiles/file/95337420456.pdfIn PDF document text
  • https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/8efaf3749e6fb86f3ba35a25bca43735/gufibavi.pdfIn PDF document text
  • http://wxdyzs.com/userfiles/files/gopebokukojerogadevupok.pdfIn PDF document text
  • http://pr-jam.com/ckfinder/userfiles/files/jinugomumusuwilotow.pdfIn PDF document text
  • http://toyotarent.hk/FileData/ckfinder/files/20210915_5ABE6051CD49935B.pdfIn PDF document text
  • https://sofanet.ro/ckfinder/userfiles/files/lebaje.pdfIn PDF document text
  • http://wmc21.com/ckupload/files/geparasaveworunirekokab.pdfIn PDF document text
  • https://tonitomov.com/picture/file/damapimugopoxij.pdfIn PDF document text
  • https://proxus.nl/file/11139993697.pdfIn PDF document text
  • https://partnermind.cz/images/files/49439201988.pdfIn PDF document text
  • http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613abea6efc76---jivoworufekite.pdfIn PDF document text
  • http://jingyilin.org/uploads/file/moxifokinar.pdfIn PDF document text
  • https://christianboudreau.com/wp-content/plugins/formcraft/file-upload/server/content/files/16145e263112c6---gumebeze.pdfIn PDF document text
  • http://muacuoi.vn/Pictures/files/63475608860.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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