Malicious PDF — malware analysis report

Heuristics 8

• 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.
• Fake invoice / payment lure low SE_INVOICE_LURE
  Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
• 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 http://kientrucnhacuagio.com/upload/files/sedujexu.pdf In PDF document text

  • https://vandolderskb.com/images/usr/3566054351.pdfIn PDF document text
  • https://lacecinella.com/writable/public/userfiles/file/wivitewalu.pdfIn PDF document text
  • https://hardlineconstruct.ro/app/webroot/files/userfiles/files/xoxasarixavovoponerafodu.pdfIn PDF document text
  • http://grandp.ru/userfiles/file/28221203977.pdfIn PDF document text
  • http://www.linkkorea.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/160a26d3a988fe---xekivegakidegel.pdfIn PDF document text
  • http://constructionone.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160870e8b0bfd9---64820032737.pdfIn PDF document text
  • http://zbigniewrodak.pl/galeria/file/levixitabuvopeli.pdfIn PDF document text
  • http://audiohrestomatiya.ru/content/file/xirofaj.pdfIn PDF document text
  • http://thcsducthang.pgdbactuliem.edu.vn/ckfinder/userfiles/files/volaruvob.pdfIn PDF document text
  • http://ulv-fogger.ru/d/files/bamojesokutunevazazuro.pdfIn PDF document text
  • https://libyamonitor.com/sites/all/libraries/ckfinder/userfiles/files/38563679553.pdfIn PDF document text
  • http://jadever.vn/Images_upload/files/zetamolusup.pdfIn PDF document text
  • http://growourworld.com/clients/83159/File/44223481576.pdfIn PDF document text
  • http://czytamzezrozumieniem.pl/userfiles/file/somagosurizokunaluxajosuf.pdfIn PDF document text
  • http://drthchowdary.net/userfiles/file/92026109975.pdfIn PDF document text
  • https://costabravas.com/uploads/localidades/files/sezefurefewepizikoxa.pdfIn PDF document text
  • http://duda-tech.pl/dudatech/upload/file/67376497518.pdfIn PDF document text
  • http://www.zopfitravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a8c1ccd3ab---64882786089.pdfIn PDF document text
  • https://www.hdcorp.com.br/wp-content/plugins/super-forms/uploads/php/files/itrphicnc1984273201h9adgb3/sijinupituvigatisewepa.pdfIn PDF document text
  • http://ambulatorioveterinariovianello.eu/userfiles/files/bezazimeliroliwupuroregu.pdfIn PDF document text
  • http://zulassungsservice4you.de/bilder/file/xiguba.pdfIn PDF document text
  • https://szaniterplaza.hu/ckfinder/userfiles/files/toxoluzusafaximuwoza.pdfIn PDF document text
  • http://tranindo.com/Uploads/userfiles/files/88760013654.pdfIn PDF document text
  • https://efsanepin.com/calisma2/files/uploads/47098631625.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=watchman+nee+pdf+sit+walk+standPDF 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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