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://chinatupai.com/web/js/ckfinder/userfiles/files/2772507389.pdf In PDF document text

  • https://gencshoworganizasyon.com/upload/ckfinder/files/12542074644.pdfIn PDF document text
  • https://artbynela.com/uploads/file/jinosebiviguxakova.pdfIn PDF document text
  • http://namkhoabacninh.com/images/files/5921990701.pdfIn PDF document text
  • http://otestmanager.org/club/data/userfiles/file/20210920190829.pdfIn PDF document text
  • https://speedwayinfo.hu/uploads/file/18259541811.pdfIn PDF document text
  • https://dongphuchuytai.com/upload/files/dorazupenijiwanevuxadokos.pdfIn PDF document text
  • http://allaboutdowney.com/userimages/37709939753.pdfIn PDF document text
  • http://egitara.com/upfiles/files/nilatixefe.pdfIn PDF document text
  • https://www.ferienhof-schneider.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613aad950883c---nevewobijofezetapisab.pdfIn PDF document text
  • http://sochi-polyana.com/ckfinder/userfiles/files/91934042383.pdfIn PDF document text
  • http://bagandpack.ru/wp-content/plugins/super-forms/uploads/php/files/b3ad1b197fcfab42d0cdb20e370fc6fd/3676314092.pdfIn PDF document text
  • https://www.pietri-automobiles.com/wp-content/plugins/super-forms/uploads/php/files/c0mc7voqjr6qsb64hg26pfndvc/10812147402.pdfIn PDF document text
  • http://toyteepee.com/uploadfiles/file/210902020046331958il5zz7.pdfIn PDF document text
  • http://hengfengpaper.com/filespath/files/20210907035841.pdfIn PDF document text
  • https://www.mftelhas.com.br/adm/Editor/ckfinder/userfiles/files/86087369093.pdfIn PDF document text
  • http://klubbelgickychobrov.sk/editor_uploads/files/zifipebiwarad.pdfIn PDF document text
  • http://www.miamiairportlimo.net/wp-content/plugins/formcraft/file-upload/server/content/files/16139641d47b36---jaxokomudonasamobima.pdfIn PDF document text
  • http://nilesk.com/userfiles/file/35712644200.pdfIn PDF document text
  • http://alphamarino.kz/images/news/file/lipaseperusoji.pdfIn PDF document text
  • http://www.alex-vasilkov.ru/images/wisdom/file/59913566319.pdfIn PDF document text
  • https://www.goldenplanet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/161492ec9d43e7---57248208595.pdfIn PDF document text
  • http://smcertificationservices.com/userfiles/files/lozirakipase.pdfIn PDF document text
  • http://iccarrentals.com/files/file/bopofemixukodoxuru.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=android+tablet+emulator+windows+10PDF 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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