Malicious PDF — malware analysis report

Heuristics 6

• 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.
• 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://huntic.ru/uplcv?utm_term=warm+vs+cold+water+laundry

  • http://videoacceso.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c3cd6b5f307---80635594391.pdf
  • http://www.dkmodels.net/ckfinder/userfiles/files/11173702064.pdf
  • https://coolinterier.sk/upload/files/53799919091.pdf
  • https://esteticarcare.com/wp-content/plugins/super-forms/uploads/php/files/264dafeafe7c0bea543def956a90e0b7/wiradikev.pdf
  • https://www.champagne-auge-dascier.com/ckfinder/userfiles/files/89189842078.pdf
  • http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/86a9ca0e8fc49020e1774e9ecc170309/31194933462.pdf
  • https://equator-maritime.com/userfiles/file/mujin.pdf
  • http://broadviewlibrary.org/uploaded_bvlib/file/91008690720.pdf
  • https://noble-worldwide.com/wp-content/plugins/super-forms/uploads/php/files/498531eabd6f48878de473ccae1e6fd5/wogikenure.pdf
  • https://www.peeryhotel.com/wp-content/plugins/super-forms/uploads/php/files/65ab7ee92d2c2afddaceadc42774e1e6/mifinel.pdf
  • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16114953a45d21---10023531483.pdf
  • https://www.americanapi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc258f176b---kexudufavarulefurewer.pdf
  • http://www.icodar.com/wp-content/plugins/formcraft/file-upload/server/content/files/160813b071b038---48093760144.pdf
  • http://axwelindia.com/uploads/tozopumotimujesagegif.pdf
  • https://davidfauquemberg.com/home/fauquemb/david/bbdg_site/userfiles/file/disolebu.pdf
  • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/a3e93ebfc7e6b6abeffd42a299138921/55488994908.pdf
  • http://markasib.ru/ckfinder/userfiles/files/lufarovu.pdf
  • http://caribsplash.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c3ee69b5b02---bokunivudifinewo.pdf
  • http://soepcentrale-dekeyser.be/userfiles/file/40632424641.pdf
  • https://roweryelectra.pl/app/webroot/uploads/file/16249291443097.pdf
  • http://doublehappyvstheinfinitesadness.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a177df88f58---27323769167.pdf
  • https://learningsolution.ca/userfiles/files/vewosojega.pdf
  • http://kaushalacademy.org/ckfinder/userfiles/files/29376390650.pdf
  • https://thealloywheelcentre.co.uk/wp-content/plugins/super-forms/uploads/php/files/9dd48f017daadfa8f100c388d0779152/xokafazomimim.pdf
  • http://www.w3.org/1999/02/22-rdf-syntax-ns#
  • http://purl.org/dc/elements/1.1/
  • http://ns.adobe.com/pdf/1.3/
  • http://ns.adobe.com/xap/1.0/
  • http://ns.adobe.com/xap/1.0/mm/
  • http://ns.adobe.com/xap/1.0/rights/
  • http://dejavu.sourceforge.net
  • http://dejavu.sourceforge.net/wiki/index.php/License

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