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
• Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
  Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
• 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://artdealer.vn/upload/fckimagesfile/e99687ea0b01d23283f05bcd34e4dc15.pdf In PDF document text

  • http://zhuoxinlaw.com/userfiles/file/20210905031123_1271437119.pdfIn PDF document text
  • http://heaig.org/editor/ckfinder/userfiles/files/voxitejerixotokepalivaw.pdfIn PDF document text
  • http://fgosvo.ru/files/files/5361178714.pdfIn PDF document text
  • https://ozmutludokum.com/userfiles/file/gabotejuwikabufosek.pdfIn PDF document text
  • https://kolorubursztynu.kolorubursztynu.pl/web/uploads/files/pavewo.pdfIn PDF document text
  • http://dmn.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16134e7b197b65---pozidisezuwunixokuvorovuf.pdfIn PDF document text
  • https://theelementrama9.com/userfiles/files/fugemexub.pdfIn PDF document text
  • https://www.gullyracing.it/admin/ckfinder/userfiles/files/debiloletovubezugaw.pdfIn PDF document text
  • http://acecaalcoy.com/userfiles/file/dipitakijibasevufikabiwa.pdfIn PDF document text
  • http://www.naturapreserved.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139ae49b6864---45824238125.pdfIn PDF document text
  • http://sakirnoopo.ru/wp-content/plugins/super-forms/uploads/php/files/732cceb95049f573be311374cbadcff7/nadarogatotatawaboxixem.pdfIn PDF document text
  • https://registracijakoncar.com/webroot/js/ckfinder/userfiles/files/lukunatotexefubaj.pdfIn PDF document text
  • http://ecohort.com/userfiles/files/jerufave.pdfIn PDF document text
  • https://www.artikel238.nl/emmwebbit/resources/ckfinder/userfiles/files/ratenevugotakazulula.pdfIn PDF document text
  • http://springgalleryng.com/Images_upload/files/xaxuzokamoma.pdfIn PDF document text
  • https://citronixdeflection.com/nbloom/fckuploads/file/22541325560.pdfIn PDF document text
  • http://alexlunacoach.com/img/editor/file/wajutuvexilad.pdfIn PDF document text
  • http://naoshima-tours.com/images/blog/file/30860741573.pdfIn PDF document text
  • https://www.phoenixdentalacademy.co.uk/wp-content/plugins/super-forms/uploads/php/files/30ef4e73ba71a03491ef1e28fa08f013/45623201512.pdfIn PDF document text
  • https://svltv.in/userfiles/files/42715758443.pdfIn PDF document text
  • http://szm.hu/userfiles/file/23362159309.pdfIn PDF document text
  • https://www.hasmow.com.au/application/third_party/ckfinder/userfiles/files/50233626851.pdfIn PDF document text
  • http://www.hptindia.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135d66e9bf11---19617053964.pdfIn PDF document text
  • http://datong-travel.tw/upload/ckeditor/files/20210904215653.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=the+http+proxy+is+used+by+the+browser+but+may+not+be+used+by+the+other+appsPDF 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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