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://krisoc.ru/uplcv?utm_term=interdisciplinary+definition+pdf PDF link annotation

  • http://bigband-ulm.de/userfiles/files/nejuseba.pdfIn PDF document text
  • http://ubest.ru/images/file/37261400249.pdfIn PDF document text
  • http://fenotropil.ru/userfiles/file/vegalufavosotup.pdfIn PDF document text
  • https://signika.pl/Upload/file/pabajejogoxavil.pdfIn PDF document text
  • http://noospc.ru/SITE/files/editor/file/78309062661.pdfIn PDF document text
  • http://kientrucnhacuagio.com/upload/files/65510239620.pdfIn PDF document text
  • http://csc021.com/userfiles/file/20210622201850_xrc1ek.pdfIn PDF document text
  • http://www.ellisrasbetonwerke.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160bb417d76ec0---69883086932.pdfIn PDF document text
  • http://alpha-th.com/userfiles/file/jegufewi.pdfIn PDF document text
  • http://hosteleriayvending.com//ckfinder/userfiles/files/85302312651.pdfIn PDF document text
  • https://www.adler-leitishofen.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca3da77d29---52359878388.pdfIn PDF document text
  • http://www.creativitaecomunicazione.it/js/lib/ckfinder/userfiles/files/41266153133.pdfIn PDF document text
  • https://spherule.org/wp-content/plugins/super-forms/uploads/php/files/r0e74mlcvkma2h9tacnfho3gv0/xuvipaxugekorobesaxatud.pdfIn PDF document text
  • http://elhammagazine.com/ckfinder/userfiles/files/98673161292.pdfIn PDF document text
  • https://theshairpodcast.com/wp-content/plugins/super-forms/uploads/php/files/be961fe01e30c45814ee5f5aef4feb36/64115214005.pdfIn PDF document text
  • https://dm288.com/slicice/file/vutenexevisamudirejulufu.pdfIn PDF document text
  • http://ratchee.com/ckfinder/userfiles/files/91334980711.pdfIn PDF document text
  • http://www.petersmetalstitching.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607fca89cb6aa---fejejodoja.pdfIn PDF document text
  • https://mmagame.com/userfiles/file/46873433840.pdfIn PDF document text
  • https://www.hs-hofgastein.salzburg.at/ckfinder/userfiles/files/68479966477.pdfIn PDF document text
  • https://hightechrustremovers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160727f09a89f3---54675937528.pdfIn PDF document text
  • http://depcip.com/app/views/panel/ckfinder/userfiles/files/bevevolejapodisipal.pdfIn PDF document text
  • https://vinisfarm.com/wp-content/plugins/super-forms/uploads/php/files/2f8078832008cee64cbd8119215d87e8/matobejedu.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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