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 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 https://laborke.ru/uplcv?utm_term=the+only+cell+organelle+seen+in+prokaryotic PDF link annotation

  • http://neuragen.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16090a88846472---61538708119.pdfIn PDF document text
  • http://sky1981.com/asset/uploads/files/19759086130.pdfIn PDF document text
  • http://zgkimsteszew.pl/img/upload/files/29771782952.pdfIn PDF document text
  • https://hostmegasoft.com/calisma2/files/uploads/pupixasalizeluforof.pdfIn PDF document text
  • https://vietnamairlinescorp.org/js/ckfinder/userfiles/files/40969812534.pdfIn PDF document text
  • https://www.fmworks.com.tr/wp-content/plugins/super-forms/uploads/php/files/e23k9cohu7iifnu1cu0ako9lje/xojatodu.pdfIn PDF document text
  • http://ehoron21.mn/uploads/files/14305626425.pdfIn PDF document text
  • http://k12kos.com/ckfinder/userfiles/files/75146746314.pdfIn PDF document text
  • http://kystop.com/wp-content/plugins/super-forms/uploads/php/files/26942ae51972e4d21f7281a04d698bac/bagalibix.pdfIn PDF document text
  • http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/1607a4e025f2f1---kodifora.pdfIn PDF document text
  • https://clubslotalmatriche.com/calcas/file/35814131912.pdfIn PDF document text
  • http://dzbnf.com/upload/file///47340897124.pdfIn PDF document text
  • https://thesmithgrouphouston.com/wp-content/plugins/super-forms/uploads/php/files/a23ed47f2516b529aa33686116ba546e/71163897480.pdfIn PDF document text
  • http://www.pianoszimmermann.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16074c22bcf29a---11274666198.pdfIn PDF document text
  • https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/6aefaf53137f5f2d7d50582383613495/noxuvetuxedodafet.pdfIn PDF document text
  • http://www.marcado.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1611da5cd95378---48974900823.pdfIn PDF document text
  • https://stockbauer.hu/uploads/file/40079559580.pdfIn PDF document text
  • http://www.mvdisposal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607478ac5673f---rizokoberata.pdfIn PDF document text
  • https://aulacvn.com/upload/fck/file/xeloparepakinivifuf.pdfIn PDF document text
  • http://www.adarshvidhyasankul.org/userfilesfile/92627569742.pdfIn PDF document text
  • http://www.ddd-iasi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608a459251126---73903351663.pdfIn PDF document text
  • http://absolutelyneon.com/userfiles/file/lopopobudupipebirigewa.pdfIn PDF document text
  • https://www.lokalesichtbarkeit.de/wp-content/plugins/super-forms/uploads/php/files/a7bfqubk2p06r13qkdf53lstio/nezisulu.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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