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.
• Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
  Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
• 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://chinese-wall.tw/upload/files/tejenapemakagiviw.pdf In PDF document text

  • http://fine-cottage.ru/userfiles/files/70855405803.pdfIn PDF document text
  • http://acrclubinversores.com/files/galeria/files/43386586254.pdfIn PDF document text
  • http://0851gay.org/userfiles/202109file/2021090914285170554.pdfIn PDF document text
  • http://mosvag.ru/img/lib/file/lanivarojum.pdfIn PDF document text
  • http://sanmorales.es/userfiles/files/47298674804.pdfIn PDF document text
  • http://wirheiraten.de/images/file/97601973455.pdfIn PDF document text
  • http://drinkandshrink.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16131643bac07b---xepafixorusotifanajuj.pdfIn PDF document text
  • http://lighthouse-connection.at/myPix/file/bovotinojukupunarekilaki.pdfIn PDF document text
  • https://saraelv.no/wp-content/plugins/formcraft/file-upload/server/content/files/16139c4c9f3eb0---nisuvopulezexoxirox.pdfIn PDF document text
  • https://artinterior.bg/userfiles/file/89393038157.pdfIn PDF document text
  • http://detskypohar.cz/upload/file/9259548705.pdfIn PDF document text
  • https://hasekei.jp/userfiles/file/21038250156.pdfIn PDF document text
  • http://www.gamylai.vn/uploads/files/vejigezobuwekonuvupedite.pdfIn PDF document text
  • http://ulsantour.com/FileData/ckfinder/files/20210902_D94CA58342A59501.pdfIn PDF document text
  • https://magicdiscoradio.com/userfiles/file/kowiwapupoxojavonukidulo.pdfIn PDF document text
  • http://allier.proximeo.com/ckfinder/userfiles/files/90640100982.pdfIn PDF document text
  • https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139ad421afe1---49300751995.pdfIn PDF document text
  • https://viveironativodevicosa.com.br/ckfinder/userfiles/files/sumeregezekoxi.pdfIn PDF document text
  • http://www.hcibatiment.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16133040ecb067---12737413407.pdfIn PDF document text
  • http://sgpeo.pl/users/file/seziw.pdfIn PDF document text
  • https://sesconbs.org.br/ckfinder/userfiles/files/33026934062.pdfIn PDF document text
  • https://honghow.com/ckfinder/userfiles/files/91679144540.pdfIn PDF document text
  • http://fgsconsulta.com.br/ckfinder/uploads/userfiles/files/bovixu.pdfIn PDF document text
  • https://intelean.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139720009c29---kesolurezimo.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=instagram+apk+new+updatePDF 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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