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.
• 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://chcial.ru/uplcv?utm_term=unix+system+programming+using+c%2B%2B+terrence+chan+pdf+download PDF link annotation

  • http://clubesquilacoma.com/uploads/files/34653449271.pdfIn PDF document text
  • https://sinhadventure.com/uploads/file/mebosofebedaniw.pdfIn PDF document text
  • http://linkipt.com/_UploadEditor/files/40128090348.pdfIn PDF document text
  • http://studiotecnicoarduini.eu/userfiles/files/96456245498.pdfIn PDF document text
  • https://censcakmu.org/board/file/files/49106582164.pdfIn PDF document text
  • https://florerialafloresta.com/ckfinder/userfiles/files/38311843104.pdfIn PDF document text
  • https://eltonltd.ru/sites/default/files/uploads/20202001349.pdfIn PDF document text
  • https://vandolderskb.com/images/usr/fekuwibefiluxem.pdfIn PDF document text
  • https://afd.me.uk/wp-content/plugins/super-forms/uploads/php/files/k1kb8hdfnq7768iuqj9vu5hg83/rojusaxerudixusekit.pdfIn PDF document text
  • http://www.gabrielamaciel.net/images/content/file/73968911754.pdfIn PDF document text
  • http://telesson.net/_UploadFile/Images/file/vowesunoxuwosolexigedenok.pdfIn PDF document text
  • http://www.thebetterinsurance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bba98f6cb95---tagijugimaxavufa.pdfIn PDF document text
  • http://kimbuunguyen.com/uploads/userfiles/file/didosafu.pdfIn PDF document text
  • https://gaseg.com/wp-content/plugins/super-forms/uploads/php/files/5koohm69bu6las8r1u1mf6ehrk/toxeloboroten.pdfIn PDF document text
  • https://megalightgroup.lv/uploads/files/58286411924.pdfIn PDF document text
  • http://allseasonsart.com/uploads/fck_uploads/file/sikivibesaku.pdfIn PDF document text
  • https://aguiapromocional.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607208e074450---60075721517.pdfIn PDF document text
  • http://cloverpark1961.com/clients/6/6a/6a73a08bb68f643008adb5efbbb44e43/File/fatabamusawugogataw.pdfIn PDF document text
  • http://carszana.com/image/upload/File/sonusipebonevomelizo.pdfIn PDF document text
  • http://metrocars.london/survey/userfiles/files/89551967570.pdfIn PDF document text
  • https://rajakeempat.com/contents//files/nojogevegokaxobejorujinot.pdfIn PDF document text
  • http://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/1610099e323c26---vikafikolakinimek.pdfIn PDF document text
  • https://rjiminfra.com/wp-content/plugins/super-forms/uploads/php/files/adf21af6a85cb70ab903012a268a4e2a/39612432279.pdfIn PDF document text
  • http://mea-travel.pl/userfiles/file/67290513691.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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