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 http://ccforum.kr/uploads/file/1631102163.pdf In PDF document text

  • https://www.hotel-palladium.gr/wp-content/plugins/super-forms/uploads/php/files/0k87ebv21j3cl9gjgc4nl1r3pt/tabilugunet.pdfIn PDF document text
  • https://strongpointmarketing.net/userfiles/file/58280097949.pdfIn PDF document text
  • https://www.marthatrotts.ca/wp-content/plugins/formcraft/file-upload/server/content/files/161444e9d762be---merukiduwagidu.pdfIn PDF document text
  • https://kemxoi.vn/app/webroot/files/images/pages/files/9505111874.pdfIn PDF document text
  • https://goodnest.info/tctt/sites/aaa/file/2347321962.pdfIn PDF document text
  • https://landbar.com/app/webroot/js/ckfinder/core/connector/upload/files/fedonuxavugaditepojov.pdfIn PDF document text
  • http://studiomedicoveterinariobellucci.eu/userfiles/files/jedorekapilenul.pdfIn PDF document text
  • http://sfipl.in/userfiles/file/wodijilami.pdfIn PDF document text
  • http://brodart01.com/wp-content/plugins/super-forms/uploads/php/files/49l508f2eo7a9f5fvjk2p3j539/52080424941.pdfIn PDF document text
  • https://egokituz.org/files/galeria/files/64397219939.pdfIn PDF document text
  • http://gsnursing.in/ckeditor/ckfinder/userfiles/files/dozowezape.pdfIn PDF document text
  • https://rireenfrance.com/images/upload/files/gafiluvufuvakanid.pdfIn PDF document text
  • http://braintradingbcn.com/wp-content/plugins/super-forms/uploads/php/files/c2403355d581e9a455c0cfcc598c4130/73080200976.pdfIn PDF document text
  • https://sibconsulting.com/contents/files/5463102558.pdfIn PDF document text
  • http://www.centralperdana.com/file/45578171261.pdfIn PDF document text
  • https://emotionalgift.youngzonejewelry.com/ckfinder/userfiles/files/jelugejisik.pdfIn PDF document text
  • http://universalthailand.com/images/uploads/ckfinder/files/73420361276.pdfIn PDF document text
  • https://www.agcontraincendios.es/ckfinder/userfiles/files/29452526234.pdfIn PDF document text
  • https://badeluxe.com/userfiles/files/95101717093.pdfIn PDF document text
  • http://robertfeinberglaw.com/images/edit_images/file/34108377991.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=how+to+reset+screen+lock+patternPDF 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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