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 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://krisoc.ru/uplcv?utm_term=4+stone+to+lbs PDF link annotation

  • https://karinbentum.nl/uploads/file/30539986814.pdfIn PDF document text
  • https://www.electriclighting.com/wp-content/plugins/super-forms/uploads/php/files/89419523132a760d3cdc7cf968e0171d/najazexalowajixuju.pdfIn PDF document text
  • http://cbelmira.com/wp-content/plugins/super-forms/uploads/php/files/hn2brofh9ksigkmjnhn4ge6276/savunupep.pdfIn PDF document text
  • https://paardenwelzijnscheck.nl/app/webroot/files/ckeditor_files/files/85486153999.pdfIn PDF document text
  • https://divorcioconsensual.com.br/wp-content/plugins/super-forms/uploads/php/files/eb098bed41ea599957a3b70a1ca5bed4/99897261276.pdfIn PDF document text
  • https://digidatadecolombia.com/wp-content/plugins/super-forms/uploads/php/files/c4ae9fca16033a81dc9fcdf5be1875a5/xijemopile.pdfIn PDF document text
  • http://axwelindia.com/uploads/8195953446.pdfIn PDF document text
  • http://x04ydivan.ru/userfiles/file/19717403093.pdfIn PDF document text
  • https://www.nordatec.com/wp-content/plugins/super-forms/uploads/php/files/6lqu8c54th4581j8oo6vnherr5/17051398542.pdfIn PDF document text
  • https://austdoorcaocap.com/upload/files/susovidoxoxabuzol.pdfIn PDF document text
  • http://arc-en-cielproduce.com/ckfinder/userfiles/files/39454416887.pdfIn PDF document text
  • http://www.mostex.sk/files/articles/file/43477285016.pdfIn PDF document text
  • http://ontheedgeofnow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b05ed69acaf---datoxupe.pdfIn PDF document text
  • https://uleiuri.ro/userfiles/file/duvin.pdfIn PDF document text
  • http://poongdung.com/FileData/ckfinder/files/20210719_E63439F5D474B2D7.pdfIn PDF document text
  • http://sherwoodonionfestival.com/ckfinder/userfiles/files/xajolaketur.pdfIn PDF document text
  • https://tootooair.com/FileData/ckfinder/files/20210706_168D0EC013C1CD0D.pdfIn PDF document text
  • http://constructionone.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160d2c14b66fba---72440630837.pdfIn PDF document text
  • http://pmdrecycling.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c9f73575a78---7436340793.pdfIn PDF document text
  • https://flylights.pl/wp-content/plugins/super-forms/uploads/php/files/2bcj6vbegfh0e5d1alpn1oknsi/20192097618.pdfIn PDF document text
  • http://hourinkan.net/js/upload/files/68050109248.pdfIn PDF document text
  • http://askort.pl/Upload/file/40011673204.pdfIn PDF document text
  • http://djapm.com/userfiles/file/83694211514.pdfIn PDF document text
  • http://abwessex.com/uploads/files/lalodazibofusojik.pdfIn PDF document text
  • http://lncxjzxxw.com/upload_fck/file/2021-8-3/20210803113407906085.pdfIn PDF document text
  • https://tamtam.com.ua/wp-content/plugins/super-forms/uploads/php/files/f36ad21c0aa4cd8eb737c798bca9866a/43954395424.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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