Malicious PDF — malware analysis report

Heuristics 7

• 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 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=find+the+sum+of+the+infinite+series PDF link annotation

  • http://baharemadinah.com/wp-content/plugins/formcraft/file-upload/server/content/files/161410dfcc47b5---54036977789.pdfIn PDF document text
  • http://szintai.hu/ckfinder/userfiles/files/99256935896.pdfIn PDF document text
  • http://villahetzwartepaard.nl/survey/userfiles/files/boludet.pdfIn PDF document text
  • https://evocative.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16137035551a2b---fotivejosugu.pdfIn PDF document text
  • https://kuechentreff-schmid.de/wp-content/plugins/super-forms/uploads/php/files/dbmbb86p4ercjcho73it44adpp/28547003077.pdfIn PDF document text
  • http://nowator-zpu.pl/userfiles/file/nasinofib.pdfIn PDF document text
  • https://advik.net/userfiles/file/xefapuzezu.pdfIn PDF document text
  • https://jgranit.pl/userfiles/file/69237003388.pdfIn PDF document text
  • https://www.booster-p.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613fd52fb878c---18342356732.pdfIn PDF document text
  • http://www.primalegal.eu/wp-content/plugins/super-forms/uploads/php/files/004939dqeur7r9svp1c0q9b1l7/28102712542.pdfIn PDF document text
  • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/33722eb1aee7da992e8ad12f54480387/lubabuzusen.pdfIn PDF document text
  • https://cafeau1ait.xyz/js/ckfinder/userfiles/files/zoliso.pdfIn PDF document text
  • http://9275522-travel.com/userfiles/file/nugifagapone.pdfIn PDF document text
  • https://nezrenpin.com/calisma2/files/uploads/joraxodup.pdfIn PDF document text
  • http://goghepcacloai.com/media/ftp/file/rumorojixogadoj.pdfIn PDF document text
  • http://saltokisport.com/uploads/files/fodezadonidezewuguxazoki.pdfIn PDF document text
  • http://eros-arena.de/eros/userfiles/file/kukewasidezudapetu.pdfIn PDF document text
  • http://accessiblevehicleservices.com/userfiles/file/kozabufepadimoxifaba.pdfIn PDF document text
  • https://comodee.com/wp-content/plugins/formcraft/file-upload/server/content/files/161410e65e691e---73828171330.pdfIn PDF document text
  • https://benhgout.net/uploads/Files/file/wegedowupazunepij.pdfIn PDF document text
  • http://nyett.hk/uploads/news/files/nixozipomefudad.pdfIn PDF document text
  • https://laurallo.com/ckfinder/userfiles/files/50140394755.pdfIn PDF document text
  • http://yuhenganquan.com/userfiles/file/20210904035100_1032688078.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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