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://coretry.ru/uplcv?utm_term=resueltos+10+ejemplos+de+raiz+cuadrada+exacta PDF link annotation

  • https://veritiesinstitute.com/wp-content/plugins/super-forms/uploads/php/files/c7b2d65b206cb7fc14b2c2b1105af0ec/zuwowi.pdfIn PDF document text
  • https://cosplay-expo.it/ckfinder/userfiles/files/67159260080.pdfIn PDF document text
  • http://savalis.ru/userfiles/file/turutefokexoloratoput.pdfIn PDF document text
  • http://toeicspeaking.net/_UploadFile/Images/file/56193061046.pdfIn PDF document text
  • http://actionelectric.pt/www/wp-content/plugins/formcraft/file-upload/server/content/files/1609045a0a66e6---vowurobe.pdfIn PDF document text
  • https://vaytieudungtragop.com.vn/wp-content/plugins/super-forms/uploads/php/files/hl9saevdeij2fc5bq7996j4hkg/rilisigemexisijonikew.pdfIn PDF document text
  • http://www.johnknox.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1607ceb0748625---karasog.pdfIn PDF document text
  • https://www.helpfulhunks.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608187d3b56d7---zaroluguvekuwupopufep.pdfIn PDF document text
  • https://guijek.com/userfiles/file/92295881147.pdfIn PDF document text
  • http://chromowane.com/userfiles/file/nepisakoxemexafitawo.pdfIn PDF document text
  • https://stradatextiles.com/upload/ckfinder/files/saraxanilusoded.pdfIn PDF document text
  • http://maysoi.com/hinhanh_fckeditor/file/12094267838.pdfIn PDF document text
  • http://msnladyboy.com/ckfinder/userfiles/files/12179345425.pdfIn PDF document text
  • http://weifong.tw/fckimages/file/86557531759.pdfIn PDF document text
  • http://makaifruits.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609aa472cff86---24579612262.pdfIn PDF document text
  • http://qualityspices.in/ckuploads/files/jaxuxolugebixazuk.pdfIn PDF document text
  • https://inchirierielicopter.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160812f954f823---vusagubom.pdfIn PDF document text
  • http://henri-ruch.ch/doc_pub/file/busiroromapoduluxamopo.pdfIn PDF document text
  • http://mictrogiang.com/userfiles/files/57896906039.pdfIn PDF document text
  • http://plenaadoracao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160bdb28ce414a---luxuju.pdfIn PDF document text
  • http://bestbuyfromindia.com/userfiles/file/sixotivefavekame.pdfIn PDF document text
  • http://www.alrafeef.com/faisaliya/js/ckfinder/userfiles/files/24782650162.pdfIn PDF document text
  • https://www.msolartop.cz/wp-content/plugins/formcraft/file-upload/server/content/files/160b6f50d88350---zetazabesenazas.pdfIn PDF document text
  • https://10glazsikeyrosa.ru/file/5919703209.pdfIn PDF document text
  • https://postscriptproductions.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087ec137b016---vefuxivis.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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