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://jdconstinc.com/ckfinder/userfiles/files/92404562672.pdf In PDF document text

  • http://noithatdangcap.vn/app/webroot/uploads/files/47646522705.pdfIn PDF document text
  • http://shamayachts.com/upload/file/47240659022.pdfIn PDF document text
  • http://tainanrup.longi.tw/uploadfiles/files/20210927_002457_4179.pdfIn PDF document text
  • https://www.willmarshelter.com/ckfinder/userfiles/files/30414625548.pdfIn PDF document text
  • http://avvocatogiuliani.it/userfiles/files/wupurinu.pdfIn PDF document text
  • http://www.cargeacrew.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16150e698a7a85---32789866653.pdfIn PDF document text
  • http://www.mondzorgvesa-voorschoten.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1615150098bfc2---34726192697.pdfIn PDF document text
  • https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1613ffe25c9711---javuwogi.pdfIn PDF document text
  • http://prodesign31.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1613fe66bc11a2---gilibijanokerajolukati.pdfIn PDF document text
  • http://ambulatorioveterinarioilghirlandaio.it/userfiles/files/7073277600.pdfIn PDF document text
  • https://inchirieriavioane.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16141b3ac8fafa---kapusamunuzodokevel.pdfIn PDF document text
  • https://chung-pei.com/userfiles/file/44949876582.pdfIn PDF document text
  • http://zonazero.es/userfiles/file/rizege.pdfIn PDF document text
  • http://argentum.com/wp-content/plugins/super-forms/uploads/php/files/d9o46tig9akehmqn6nq064m3kc/55383360039.pdfIn PDF document text
  • https://srccaa.bdbabymart.com/app/webroot/ckfinder/userfiles/files/boxajoxulupamizo.pdfIn PDF document text
  • https://www.studioline.ie/ckfinder/userfiles/files/87018566738.pdfIn PDF document text
  • https://lcd96.ru/wp-content/plugins/super-forms/uploads/php/files/9c6b507e19f5c064cc40af64baf18e03/34643791304.pdfIn PDF document text
  • http://a2itsolutions.com/chop/multimedia/userfiles/file/48286009684.pdfIn PDF document text
  • http://xn--djr00fsyfv0o5qgy9u.net/filespath/files/20210919080412.pdfIn PDF document text
  • http://www.barankayalar.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/161464f2368413---gevopeluxotuwenefo.pdfIn PDF document text
  • http://rungruangsteel.com/public/upload/userfiles/files/17433296797.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=hack+in+app+purchases+for+online+gamesPDF link annotation
  • 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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