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://chcial.ru/uplcv?utm_term=sign+in+seeking+arrangements PDF link annotation

  • http://manegedebuitenwijck.nl/uploads/file/difufavaniv.pdfIn PDF document text
  • http://koreadramatour.com/FileData/ckfinder/files/20210916_69D3FB945F7E8F2E.pdfIn PDF document text
  • http://autostyle-japan.com/js/upload/files/27314861549.pdfIn PDF document text
  • http://tce.vn/imagesflashupload/file/17874910340.pdfIn PDF document text
  • https://tourpon.kr/FileData/ckfinder/files/20210903_E7F737761AB625DA.pdfIn PDF document text
  • http://beiwendq.com/userfiles/file/41010326348.pdfIn PDF document text
  • http://thepokeluau.com/uploads/files/76175765259.pdfIn PDF document text
  • http://greddy.com/admin/common/ckfinder/userfiles/File/74509321849.pdfIn PDF document text
  • https://corpusbg.com/files/fck/file/99169013394.pdfIn PDF document text
  • http://gzky.cn/dubeite/ckfinder/userfiles/files/20210906_000626.pdfIn PDF document text
  • http://www.integra-cr.cz/administrace/ckfinder/userfiles/files/degunoxalenifixesu.pdfIn PDF document text
  • https://nghiepvu.udicmanpower.vn/uploads/news_file/wemepumiludovamatoso.pdfIn PDF document text
  • http://land89.com/ckupload/files/59962485415.pdfIn PDF document text
  • http://tvsatkrosno.pl/userfiles/file/natemir.pdfIn PDF document text
  • http://chiangmaicharmingtravel.com/ckfinder/userfiles/files/jafasivuxuvasid.pdfIn PDF document text
  • http://ud2-140.com/files/guvimober.pdfIn PDF document text
  • https://ijaetis.org/ckfinder/userfiles/files/japijolol.pdfIn PDF document text
  • https://pataniforum.com/admin/jquery/ckfinder/userfiles/files/jibepofofemoxevuk.pdfIn PDF document text
  • https://cam-ceeds.org/ckfinder/userfiles/files/xunuwexabosakukamasifoba.pdfIn PDF document text
  • https://ladychief.com/wp-content/plugins/super-forms/uploads/php/files/1928926f804a16c912e23002104c7b31/45038441795.pdfIn PDF document text
  • http://vishwkarmaenterprises.com/webroot/img/userfiles/files/15174192749.pdfIn PDF document text
  • https://skyfireconsulting.com/wp-content/plugins/super-forms/uploads/php/files/3q4pp2adubu8fba0g42dved6a4/kunefijexomijenuku.pdfIn PDF document text
  • http://joltiy.ru/uploads/files/54142332982.pdfIn PDF document text
  • http://nktrading.qa/file/files/fagorojiriditu.pdfIn PDF document text
  • http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16134340c9c6ca---ziweginakopirejawugadito.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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