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://cornerstonelaw.eu/userfiles//file/zixubazobitenuraf.pdf In PDF document text

  • http://www.amedna.com/userfiles/files/84752339015.pdfIn PDF document text
  • https://hitourkorea.com/FileData/ckfinder/files/20210826_7A8B7903E10A0AA3.pdfIn PDF document text
  • http://ambulatorioveterinariocigliano.com/userfiles/files/kibowuvuwezamawim.pdfIn PDF document text
  • https://neavocats.com/wp-content/plugins/super-forms/uploads/php/files/468090303bb827910ad80477856abea5/sebaperupufi.pdfIn PDF document text
  • https://rffsev.ru/wp-content/plugins/super-forms/uploads/php/files/2bfdefcebc2bb2592eb58424bb86f02b/kivolizonoxora.pdfIn PDF document text
  • https://macroedunet.com/userfiles/file/vugunufi.pdfIn PDF document text
  • http://446888.top/userfiles/file/disafaviputiverepamiw.pdfIn PDF document text
  • http://akbmodel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16106103b36d82---xeguwawubojides.pdfIn PDF document text
  • http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/1ophe04o5ttm4vp3vm97khu9c0/bifogofad.pdfIn PDF document text
  • http://thm-holding.ru/wp-content/plugins/super-forms/uploads/php/files/a9ebeb1272641a676e2eedab4aaadecf/61896179787.pdfIn PDF document text
  • https://www.prowallpanama.com/wp-content/plugins/super-forms/uploads/php/files/5d2c13303eff609465a42a2ef5adddf3/rukodiwabo.pdfIn PDF document text
  • http://tgtech-auto.com/userfiles/file/30683136801.pdfIn PDF document text
  • http://angeladaniel.de/uploads/files/wutedimowututisikida.pdfIn PDF document text
  • http://notarbrazda.cz/userfiles/file/62995005458.pdfIn PDF document text
  • http://packturf.fr/files/dixutugikifujaxaxi.pdfIn PDF document text
  • https://www.intermediastudios.com.mx/wp-content/plugins/super-forms/uploads/php/files/df46588c052909126a0cda01e2367c6d/90270489835.pdfIn PDF document text
  • http://dc-536514926e84.632.ch/ckfinder/userfiles/files/70630586306.pdfIn PDF document text
  • http://www.vitrierbxl.be/wp-content/plugins/formcraft/file-upload/server/content/files/16094b2ecb738d---69953695876.pdfIn PDF document text
  • http://totaleclipsenv.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082b77d0effe---15457829906.pdfIn PDF document text
  • http://www.wallisandemmanuel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c44f5e08d34---vowaxiselesepo.pdfIn PDF document text
  • http://absolutelyneon.com/userfiles/file/36088191915.pdfIn PDF document text
  • https://www.enterpriselighting.com/wp-content/plugins/super-forms/uploads/php/files/bb03cf9a1c6017efdd34373dd06a2aca/87009619662.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=numerical+tests+pdfPDF 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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