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=first+aid+usmle+step+1+2020+free+pdf+download PDF link annotation

  • http://www.peopleoftheheath.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f42e7706dcf---bevogage.pdfIn PDF document text
  • https://octvads.site/js/ckfinder/userfiles/files/50000191996.pdfIn PDF document text
  • http://hnatiukreunion.com/clients/b/b5/b5561851e3069b632e798ef7a1275556/File/53018310959.pdfIn PDF document text
  • https://www.escon.it/wp-content/plugins/super-forms/uploads/php/files/4adf874605b099ad79de77f91ad77d83/36939220079.pdfIn PDF document text
  • http://www.franklinwebdesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f032db0946---zefijewepelamoz.pdfIn PDF document text
  • http://acecaalcoy.com/userfiles/file/nosedenogelewenulexaku.pdfIn PDF document text
  • https://sketchup360.vn/wp-content/plugins/super-forms/uploads/php/files/c9ovofha90aapfifmg27m912o6/93063716238.pdfIn PDF document text
  • http://xn--krmer-dnnebacke-1kb72b.de/files/file/94418702044.pdfIn PDF document text
  • http://powerfalcon.net/uppic/files/migifopixufigud.pdfIn PDF document text
  • http://automsystem.com/UploadFile/file/20210504112216399.pdfIn PDF document text
  • https://xn--90ah6akb9e.xn--p1ai/f/file/23567390016.pdfIn PDF document text
  • http://caryhigh1987.com/clients/41333/File/86332620765.pdfIn PDF document text
  • http://europeanprofservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bcdf3fa7dd0---goterituwubafimipuwomixu.pdfIn PDF document text
  • https://primeodontorj.com/wp-content/plugins/super-forms/uploads/php/files/21dc03b4a38114ad42e5252b3a2e100e/xezemajexabigamosip.pdfIn PDF document text
  • https://jpjplumbingandheating.com/FCKeditor/file/pagixopew.pdfIn PDF document text
  • http://osullivanspressurewashing.com/wp-content/plugins/formcraft/file-upload/server/content/files/161294248c30e7---79825664603.pdfIn PDF document text
  • http://klimatyzacjaradom.pl/userfiles/file/kedukezirajobilovusixafi.pdfIn PDF document text
  • https://www.ideaklinikkadikoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ddf2d3a0e7e---torinafiru.pdfIn PDF document text
  • http://oaklandscreche.ie/userfiles/files/65320753547.pdfIn PDF document text
  • http://www.victorian-manor.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1609930c74cbe6---26066170203.pdfIn PDF document text
  • https://dhesient.com/media/wezera.pdfIn PDF document text
  • http://www.auditsi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607980aee7d26---linexobusagakanavope.pdfIn PDF document text
  • http://hoclaixebinhthuan.com/upload/contentFile/file/40639135643.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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