Malicious PDF — malware analysis report

Heuristics 6

• 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.
• 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=%D0%BB%D1%83%D1%87%D1%88%D0%B8%D0%B9+%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE%D0%BF%D0%BB%D0%B5%D0%B5%D1%80+%D0%B4%D0%BB%D1%8F+%D0%B0%D0%BD%D0%B4%D1%80%D0%BE%D0%B8%D0%B4+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE PDF link annotation

  • http://ayrh.internet-match.com/upload/files/87048475036.pdfIn PDF document text
  • http://uniondeautoescuelas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16134f74329272---72991201083.pdfIn PDF document text
  • http://www.medicellbank.com/userfiles/files/58332114280.pdfIn PDF document text
  • http://xn-----6kcaheblih5ab0a6afqbzoqe.xn--p1ai/ckfinder/userfiles/files/duxutatujibisusoxomezowo.pdfIn PDF document text
  • https://aiwatopup.com/ckfinder/userfiles/files/jikowemivorefuguta.pdfIn PDF document text
  • http://purel-biopharm.com/upload/files/19483035846.pdfIn PDF document text
  • http://dioceseofniranam.org/userfiles/file/21738832624.pdfIn PDF document text
  • http://a2itsolutions.com/chop/multimedia/userfiles/file/wexanitisogetuto.pdfIn PDF document text
  • https://refundsrefunds.com/wp-content/plugins/formcraft/file-upload/server/content/files/16152a960aebd3---lawenapubavajofuv.pdfIn PDF document text
  • https://ktmcollege.org/public_html/userfiles/file/46577468049.pdfIn PDF document text
  • https://thebottombillion.org/business_school/uploads/file/dijilavojir.pdfIn PDF document text
  • http://montpellier-business-plan.fr/mbp/upload/images/images/upload/ckfinder/19068586603.pdfIn PDF document text
  • http://dnepropress.net/files/file/82788321792.pdfIn PDF document text
  • http://zamaro.cz/images/fcke_files/file/83479304845.pdfIn PDF document text
  • https://earthchartercities.org/wp-content/plugins/formcraft/file-upload/server/content/files/1614b3606c7fe1---42882697739.pdfIn PDF document text
  • http://hoangnampte.vn/quangbasanpham/app/webroot/upload/image/files/60431929862.pdfIn PDF document text
  • https://taiwan-tiaya.com/upload/tiaya_official/files/nupubujepumipi.pdfIn PDF document text
  • http://gdlejia.com/uploadfile/files/20210902_224417.pdfIn PDF document text
  • https://sikahaiphong.com/images/news/files/subiwilepatuwuke.pdfIn PDF document text
  • https://comtraining.cl/userfiles/files/pizura.pdfIn PDF document text
  • https://tessuno.com/upload/files/614bddb8c046f.pdfIn PDF document text
  • http://geombiagioschettino.eu/userfiles/files/81140664260.pdfIn PDF document text
  • https://bxthirteen.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/537f314a5e5e0c801952ed96f624b5c1/95711214231.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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