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 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://infrive.ru/uplcv?utm_term=fraction+number+bonds+worksheets PDF link annotation

  • http://cathyourhair.nl/js/ckfinder/userfiles/files/vawukov.pdfIn PDF document text
  • http://www.sparkprototypes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d7d321b0c3---bememuvopesokimuribaxi.pdfIn PDF document text
  • https://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/a6e8a4521ecf604b781ccc977be4d65f/57999193798.pdfIn PDF document text
  • http://londonjip.com/userData/board/file/70284368904.pdfIn PDF document text
  • http://bluecars.pl/userfiles/file/korutemobatanutelabav.pdfIn PDF document text
  • http://dichvuhieuchuan.com/upload/files/35518315980.pdfIn PDF document text
  • http://selfmadefilms.nl/userfiles/files/10657617052.pdfIn PDF document text
  • https://hanomanberjaya.com/contents/files/95891766712.pdfIn PDF document text
  • https://charlesstreetvideo.com/userfiles/file/nosagelemurazi.pdfIn PDF document text
  • https://netlandschool.cl/files/gepivoxutejoxuxug.pdfIn PDF document text
  • https://thesmithgrouphouston.com/wp-content/plugins/super-forms/uploads/php/files/3cdb6c3df0da89b5ce6b9f3052731c45/34575824517.pdfIn PDF document text
  • http://nhuaduongnhapkhauaz.org/upload/files/jewovekisexajojopinipeduz.pdfIn PDF document text
  • http://www.mkkdigital.pt/wp-content/plugins/formcraft/file-upload/server/content/files/160fb73af11d7f---bexagapuwe.pdfIn PDF document text
  • https://magnettoptan.com/upload/ckfinder/files/xowiwelagu.pdfIn PDF document text
  • https://kme.pl/global/app/webroot/uploads/file/16232146962326.pdfIn PDF document text
  • http://clearlakesd.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca5900f5bb---fenakazegen.pdfIn PDF document text
  • https://ciar.vn/uploads/image/files/vakivukex.pdfIn PDF document text
  • http://op-gold.com/ck_image//files/ravewad.pdfIn PDF document text
  • http://vitanova-cattery.com/upload/file/negabofovuxit.pdfIn PDF document text
  • https://jetaime-shop.com/files/nejefebabubatelewovukevo.pdfIn PDF document text
  • https://kantankacreative.com/wp-content/plugins/super-forms/uploads/php/files/b5c4117f77a8c0d2493bccfeb142a6d5/rubogopev.pdfIn PDF document text
  • https://e-lightingcontrols.com/wp-content/plugins/super-forms/uploads/php/files/16c352827718d3eb957ff8264d0db30c/98308409398.pdfIn PDF document text
  • https://christembassybarking.org/wp-content/plugins/super-forms/uploads/php/files/16d01380c2fb8f3863fa39700a328b03/tumujuneveseder.pdfIn PDF document text
  • https://avistravel.ro/userfiles/file/15171628238.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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