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.
• 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://queure.ru/uplcv?utm_term=download+latest+version+chrome+for+windows+10 PDF link annotation

  • http://finemetal-cn.com/upload/files/wuroxibipafosojezodev.pdfIn PDF document text
  • http://classiccar-jp.com/js/upload/files/59565101251.pdfIn PDF document text
  • http://hcvitamin.com/webroot/img/files/27793742851.pdfIn PDF document text
  • http://ambulatorioveterinarioilghirlandaio.it/userfiles/files/74906394697.pdfIn PDF document text
  • http://gryfarmerskie.pl/pliki_wyswig/files/xamisivetivik.pdfIn PDF document text
  • https://rcvizovice.cz/ckfinder/userfiles/files/rigisugudikivat.pdfIn PDF document text
  • https://www.andreivieru.com/ckfinder/userfiles/files/13963981989.pdfIn PDF document text
  • http://saipanbooking.com/FileData/ckfinder/files/20210912_A4E83CECEFD5320E.pdfIn PDF document text
  • https://soenen-pneus.com/upload/file/vubode.pdfIn PDF document text
  • http://mrs724.ir/basefile/drtiketcom/files/gewexovabizebenajabi.pdfIn PDF document text
  • http://totaleclipsenv.com/wp-content/plugins/formcraft/file-upload/server/content/files/16145812e3ba0b---92842444445.pdfIn PDF document text
  • https://aluminiosarla.com/userfiles_arla/files/sisutidabi.pdfIn PDF document text
  • https://euchebnici.com/img/file/79884222328.pdfIn PDF document text
  • http://www.omt.ntou.edu.tw/ckfinder/userfiles/files/lamovedakulepimefuv.pdfIn PDF document text
  • https://adikkeempat.com/contents/files/tawanusejab.pdfIn PDF document text
  • https://ntc-container.com/upload/files/rupelalinavi.pdfIn PDF document text
  • https://360clothing.in/home/www360cl/public_html/uploads/images/files/34658632808.pdfIn PDF document text
  • http://belv.ru/userfiles/file/36201683924.pdfIn PDF document text
  • https://mebelpozakazu.ru/wp-content/plugins/super-forms/uploads/php/files/86e3a5a3d9ca9f656a52a30e15782851/35903050829.pdfIn PDF document text
  • https://careersourcechipola.com/files/public/jezokadivowowipage.pdfIn PDF document text
  • http://zsdbiopharm.com/upload/files/38236093908.pdfIn PDF document text
  • http://kleinschaden-expert.com/userfiles/file/100424176.pdfIn PDF document text
  • https://gtselect.fr/ckfinder/userfiles/files/bubikemikojuzobutonukome.pdfIn PDF document text
  • https://cam-ceeds.org/ckfinder/userfiles/files/binobelubokarumonaduwop.pdfIn PDF document text
  • http://www.orarestauratorisaf.it/wp-content/plugins/formcraft/file-upload/server/content/files/1613b55f61120a---lalunurodizo.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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