Malicious PDF — malware analysis report

Heuristics 6

• 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 http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/1609137791bc32---80269841245.pdf In PDF document text

  • http://fgosvo.ru/files/files/16016855305.pdfIn PDF document text
  • http://www.kickcommerce.com/userfiles/file/lesonip.pdfIn PDF document text
  • http://bamt.be/wp-content/plugins/formcraft/file-upload/server/content/files/16070d74c9c587---52002463573.pdfIn PDF document text
  • http://neodev.space/wp-content/plugins/formcraft/file-upload/server/content/files/160c89778ec934---musup.pdfIn PDF document text
  • https://personalloan2u.com/wp-content/plugins/super-forms/uploads/php/files/4567dfc5ff824eb3505d038370927e33/28043235563.pdfIn PDF document text
  • http://www.hollyskauaicondo.com/wp-content/plugins/formcraft/file-upload/server/content/files/161212598037ea---desulonitatitubesivo.pdfIn PDF document text
  • http://anhbanglaw.com/userfiles/file/88167037687.pdfIn PDF document text
  • http://kompletucetnictvi.cz/files/file/79759238564.pdfIn PDF document text
  • http://dokturmice.com/ckfinder/userfiles/files/69465626433.pdfIn PDF document text
  • http://cps-mbstu.edu.bd/app/webroot/js/ckfinder/userfiles/files/sanasi.pdfIn PDF document text
  • http://extintoresorigen.com/images/editor/12157989952.pdfIn PDF document text
  • http://ersatzmonitor.de/userfiles/file/tunowofevitikiwigexi.pdfIn PDF document text
  • http://zpb-maciejewski.pl/upload/fck/file/21056333738.pdfIn PDF document text
  • http://unternehmensberatung-hegenbarth.de/userfiles/file/towawexukuvu.pdfIn PDF document text
  • https://www.infratechgroep.nl/wp-content/plugins/super-forms/uploads/php/files/3802203ef6346e240a4177f459ce0c7c/77669781590.pdfIn PDF document text
  • https://www.die-umzugsfabrik.com/wp-content/plugins/formcraft/file-upload/server/content/files/160792e130df86---50554862793.pdfIn PDF document text
  • https://elicopter-de-inchiriat.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607c3ae9edeca---befesekubaju.pdfIn PDF document text
  • http://brkvinc.com/userfiles/file/98402511349.pdfIn PDF document text
  • http://alkanboya.com/files/file///tezaf.pdfIn PDF document text
  • https://vleek.com/uploads/files/voxutu.pdfIn PDF document text
  • http://shannonlakeestates.org/fck_images/file/pumunawanadovu.pdfIn PDF document text
  • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160894ecd6b519---rikibabajodezikokapupab.pdfIn PDF document text
  • http://elyriahigh1974.org/clients/0/05/052ab20d644b737728595af1a47b4450/File/59346625456.pdfIn PDF document text
  • http://usmleworkout.com/files/file/tubexenigiregudara.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=visual+effects+and+compositingPDF link annotation
  • 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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