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://infrive.ru/uplcv?utm_term=schaum%27s+outline+programming+with+c+pdf PDF link annotation

  • http://espaciocultivarte.com/ckfinder/userfiles/files/pobore.pdfIn PDF document text
  • http://marymo.ru/uploads/files/33716247844.pdfIn PDF document text
  • http://ppogrimall.com/upload/editor_image/file/vigadiguranajofutavuto.pdfIn PDF document text
  • https://xn--80aaa1arbfjoe3bzh.xn--p1ai/data/files/sopuro.pdfIn PDF document text
  • http://takramaipai.com/mypicture/file/26387017211.pdfIn PDF document text
  • https://stayinbranson.com/ckfinder/triplebuserfiles/file/rubirofumegedav.pdfIn PDF document text
  • http://www.laterveer-biesenbeek.nl/ckfinder/userfiles/files/53239520911.pdfIn PDF document text
  • https://slezanie.eu/userfiles/file/zozijetenetamigarede.pdfIn PDF document text
  • http://festivaldeliteraturadepereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/161374cbca44fa---2303444677.pdfIn PDF document text
  • http://swancentive.com/cote_dor_import/admin/ckfinder/userfiles/files/tijawe.pdfIn PDF document text
  • http://jshtextile.com/UserFiles/file///56877492707.pdfIn PDF document text
  • http://year-c.com/upload_fck/file/2021-9-4/20210904040449177207.pdfIn PDF document text
  • http://nb-magnet.com/upload/files/tapobusebomidigegotep.pdfIn PDF document text
  • http://bacsiha.com/public/ckfinder/userfiles/files/73802010800.pdfIn PDF document text
  • https://dentinale.eu/wp-content/plugins/super-forms/uploads/php/files/7e87c162a3e3192b6826e6da68958ef9/57410765166.pdfIn PDF document text
  • https://aguiapromocional.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613ce09a3680f---49225691090.pdfIn PDF document text
  • https://solidpractise.com/files/userfiles/file/85147577418.pdfIn PDF document text
  • http://powercleanperu.com/cms_powerclean_2015/sgi_userfiles/userfiles/files/fuvajukojadupo.pdfIn PDF document text
  • http://timatey.kz/wp-content/plugins/super-forms/uploads/php/files/c16ovdi0buekd0kvbin47grco7/gugoputevatiwab.pdfIn PDF document text
  • https://massagetheory.ca/wp-content/plugins/super-forms/uploads/php/files/221f437d41bb0e9818aaca30cc3552c5/95146472344.pdfIn PDF document text
  • http://longbienco.com/js/ckfinder/userfiles/files/97031667534.pdfIn PDF document text
  • https://rezilta.com/psum/admin/userfiles/file/jonoritanorogamuweza.pdfIn PDF document text
  • https://efckrakow.pl/userfiles/file/65660159273.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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