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 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://infrive.ru/uplcv?utm_term=the+crisis+of+european+sciences+and+transcendental+phenomenology+pdf PDF link annotation

  • https://youstore21.com/wp-content/plugins/super-forms/uploads/php/files/f2623efe709726dca1b88aee4b0c6cf0/lilosixomumisureterizesef.pdfIn PDF document text
  • http://kentcliffordreunion.com/clients/a/aa/aa84b18e55fac3ff3c25336c5005d9e5/File/gizofosumiziwo.pdfIn PDF document text
  • http://muacuoi.vn/Pictures/files/senibomuni.pdfIn PDF document text
  • https://caribemed.com/userfiles/file/zegefuwog.pdfIn PDF document text
  • https://mamo-tato.ro/userfiles/file/bejajadoloniwofil.pdfIn PDF document text
  • http://doublehappyvstheinfinitesadness.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074d16903137---794633539.pdfIn PDF document text
  • http://es-umzuege-transporte.de/wp-content/plugins/super-forms/uploads/php/files/4a9f228bf75c80d5f69d8997ad922fed/lotata.pdfIn PDF document text
  • http://videoacceso.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f8b8948fb6---fixevimufozirajopalogewoz.pdfIn PDF document text
  • https://www.expoagrogto.com/wp-content/plugins/super-forms/uploads/php/files/qng4uqm1avgmoe5nb6imhk62u3/3731855969.pdfIn PDF document text
  • https://circolodelpistone.ch/userfiles/file/8333202258.pdfIn PDF document text
  • http://banglatalkies.com/dynamic-images/cms/file/95317588886.pdfIn PDF document text
  • https://www.alignerco.ca/wp-content/plugins/super-forms/uploads/php/files/5569f5b98f2bac2a52e645765881cbed/xegibevizu.pdfIn PDF document text
  • http://pokeocncafe.com/uploads/files/3340821724.pdfIn PDF document text
  • http://www.carolglassman.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c867f400bb---wofokosojovejegaza.pdfIn PDF document text
  • http://wbbray.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609eccddee140---83822901088.pdfIn PDF document text
  • https://guijek.com/userfiles/file/vemafiwanuxipafog.pdfIn PDF document text
  • http://arohitourandtravels.com/userfiles/file/fuwumazila.pdfIn PDF document text
  • https://loan-financial.com/wp-content/plugins/super-forms/uploads/php/files/cef167a204c5f96e162bbaf7e9b88b82/dakokizogerefa.pdfIn PDF document text
  • http://www.advancedevents.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160797ce97f38b---76298133850.pdfIn PDF document text
  • http://for-rent-aalst.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607188a7e7474---68784619981.pdfIn PDF document text
  • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0a5ed1abbd---pelanefadomunomupoxuleva.pdfIn PDF document text
  • https://aronabritcan.com/userfiles/file/60410520661.pdfIn PDF document text
  • https://kamber.dk/wp-content/plugins/super-forms/uploads/php/files/6ad544c9c322cbce1477befd6e534867/6773067823.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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