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.
• 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://coretry.ru/uplcv?utm_term=how+to+reduce+pdf+file+size+in+adobe+reader+android PDF link annotation

  • http://www.orhancoskun.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abe02f7b979---37986823440.pdfIn PDF document text
  • http://miyozenemeryville.com/uploads/files/nalibun.pdfIn PDF document text
  • https://gulertrafik.com/wp-content/plugins/super-forms/uploads/php/files/4unn5oigf552vl1vm7fi3rar3r/garijojokam.pdfIn PDF document text
  • https://saftanton.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160c6e75fb9989---37511605339.pdfIn PDF document text
  • http://apvn.info/userfiles/file/warokemiv.pdfIn PDF document text
  • http://www.kreasoft.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160c6ca4a3669e---kojusobivizexokow.pdfIn PDF document text
  • http://rdasesores.gestconcursal.com/editor/ckfinder/userfiles/files/pokudazepavunelate.pdfIn PDF document text
  • https://udachi.co.th/wp-content/plugins/super-forms/uploads/php/files/dvgal4ed3vrj4o2k8qdhl2juev/37135935580.pdfIn PDF document text
  • https://cremyco.com/app/webroot/docs/file/ratosidedavisolodo.pdfIn PDF document text
  • https://beysukonaklari.com/ckfinder/userfiles/files/dadataxijijesinusojat.pdfIn PDF document text
  • http://geoplan.su/userfiles/file/89605416264.pdfIn PDF document text
  • https://asiaviews.org/wp-content/plugins/super-forms/uploads/php/files/rh1jv246e1bhsp7m78q2u2i513/zitezakaxokemunow.pdfIn PDF document text
  • http://studiomedicoveterinariobellucci.eu/userfiles/files/bowuruxofidikomibami.pdfIn PDF document text
  • https://www.elementstraining.co.uk/wp-content/plugins/super-forms/uploads/php/files/fck3qa2ccugukq6rq8nb4un180/10548033782.pdfIn PDF document text
  • http://atlonnuri.org/UpLoadImage/editer/files/zoxupapebuxu.pdfIn PDF document text
  • https://next-engineering.com/userfiles/files/93061930134.pdfIn PDF document text
  • https://godahoian.com/app/webroot/upload/files/18666913006.pdfIn PDF document text
  • http://mgmkt.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16098535c9f334---74464019796.pdfIn PDF document text
  • https://magerp.org/upload/files/famafezabalulesub.pdfIn PDF document text
  • https://bibliotheque-des-arts.ch/ckfinder/userfiles/files/12369357468.pdfIn PDF document text
  • https://hyosungulf.com/uploads/file/tetazufurofijejazutasa.pdfIn PDF document text
  • http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a2d66b6ecf---bazazovo.pdfIn PDF document text
  • http://daechienglishpark.com/ckfinder/userfiles/files/67749913576.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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