Malicious PDF — malware analysis report

Heuristics 5

• 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://krisoc.ru/uplcv?utm_term=avengers+infinity+gauntlet+comic+pdf PDF link annotation

  • http://jlm-kg.com/uploads/file/61939428023.pdfIn PDF document text
  • http://skyfestival.kr/ckfinder/userfiles/files/39322832435.pdfIn PDF document text
  • https://jensbrode.de/files/file/47936979763.pdfIn PDF document text
  • https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/fb9434585f47902ddaf4f88709735482/gazesazijovebijekesadib.pdfIn PDF document text
  • https://global-product.org/CKEdit/upload/files/46545080794.pdfIn PDF document text
  • http://oneself.pro/wp-content/plugins/formcraft/file-upload/server/content/files/160767991e4f4f---durifiwagukulipepupuxifax.pdfIn PDF document text
  • https://www.chartsunlimited.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/160fa8aa40da57---pulubofulujukediruselose.pdfIn PDF document text
  • https://sipsib.ru/wp-content/plugins/super-forms/uploads/php/files/156fc2187bca1fbabe4ff43650ed24a9/40087671278.pdfIn PDF document text
  • https://fieldofgreen.com/wp-content/plugins/super-forms/uploads/php/files/f778a8bf8c6f77a952778b06c3ee23c6/juzefumujeloxasadijurin.pdfIn PDF document text
  • http://lyzebrno.cz/userfiles/file/54215705015.pdfIn PDF document text
  • https://mission4recruitment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608946fcd18e9---38264661443.pdfIn PDF document text
  • http://constructionone.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b15b1d332ba---3048211160.pdfIn PDF document text
  • https://takarasushimn.com/userfiles/files/55864887981.pdfIn PDF document text
  • https://kaptenhoki.info/contents//files/6815448983.pdfIn PDF document text
  • http://aite-materials.com/upfiles/file/74156634642.pdfIn PDF document text
  • http://acecaalcoy.com/userfiles/file/73702897264.pdfIn PDF document text
  • http://studiolaviano.it/userfiles/files/84051359480.pdfIn PDF document text
  • http://subventionsbetrug.de/wp-content/plugins/super-forms/uploads/php/files/fsmkkq6t7b08se3t98bev645dj/85852516981.pdfIn PDF document text
  • https://10kshot.com/customerinterview/ckfinder/userfiles/files/1156391781.pdfIn PDF document text
  • https://editionsitaliques.com/userfiles/file/xekikedasopak.pdfIn PDF document text
  • http://hani-bee.com/userfiles/files/23890567195.pdfIn PDF document text
  • http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611138c73a886---jaxelurulofef.pdfIn PDF document text
  • https://rent-1.es/ckfinder/userfiles/files/35287805671.pdfIn PDF document text
  • https://micast.de/wp-content/plugins/super-forms/uploads/php/files/o6r38os6htl7kn6ap2qficlfn2/39468486872.pdfIn PDF document text
  • https://www.pfgpartners.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16099457381dc4---jidulobumatugenas.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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