Malicious PDF — malware analysis report

Heuristics 7

• ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
• 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://smidgel.ru/uplcv?utm_term=kakegurui+manga+download+pdf PDF link annotation

  • https://mmoxx.mn/userfiles/files/62965159637.pdfIn PDF document text
  • http://studioboscono.it/userfiles/files/78873934978.pdfIn PDF document text
  • https://sellerflows.com/wp-content/plugins/super-forms/uploads/php/files/95b2b4c04062661ba20cbf2fe8240c1b/ruxoxizofofamuvikak.pdfIn PDF document text
  • http://kreativitaet-stadlhofer.at/global/images/userfiles/file/64895331384.pdfIn PDF document text
  • http://litho-and-co.fr/ckeditor/upload/files/30926134888.pdfIn PDF document text
  • https://leesman.com/wp-content/plugins/super-forms/uploads/php/files/aa4393d2eccf5797d5f0e77e184d6507/33624842348.pdfIn PDF document text
  • https://psfund.org/public/uploads/files/cms_files/gazinatukadazo.pdfIn PDF document text
  • http://www.training4thefuture.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609f6ae7a32c1---81971388086.pdfIn PDF document text
  • http://prestopc.it/upload/file/89116001380.pdfIn PDF document text
  • http://isvpro.com/custom/files/zagip.pdfIn PDF document text
  • http://eduomania.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7c45dd8c0b---62362161533.pdfIn PDF document text
  • https://xn--i1aam8cb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/52fca68f9079d8eb9093a9f67bcfb863/35587498425.pdfIn PDF document text
  • http://pomodorolennep.de/gfx/userfiles/files/tajejitedinefija.pdfIn PDF document text
  • http://hrzservices.com/uploadfiles/file/54699845114.pdfIn PDF document text
  • https://aliencosmicexpo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070f8d40314f---xanurowadigusogezuxobozi.pdfIn PDF document text
  • http://ros-audit.com/i/up/file/bemuzafad.pdfIn PDF document text
  • http://romanakladatelstvi.cz/userfiles/file/kezekuxutenerukar.pdfIn PDF document text
  • http://www.auditsi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160840bc084f4a---40036188750.pdfIn PDF document text
  • https://fastcomputer.vn/wp-content/plugins/super-forms/uploads/php/files/1f2e7618abb81fdaaf0527af35cfa27d/zajaduwomu.pdfIn PDF document text
  • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/tv5sa6j3at96a5mbl15u8ks0t1/43226736178.pdfIn PDF document text
  • https://parklanehotel.asia/userfiles/file/40179892077.pdfIn PDF document text
  • https://sproname.com/files/userfiles/files/22875789606.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/fqoe96cg2vrghog8cfforre5m4/55825972890.pdfIn PDF document text
  • http://slmj8.com/data/userfiles/files/sunijejiwufemufe.pdfIn PDF document text
  • https://kakegurui-animIn 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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