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 http://dabaizhongxue.com/upload_fck/file/2021-6-24/20210624004912212108.pdf In PDF document text

  • http://mfplus.ba/wp-content/plugins/formcraft/file-upload/server/content/files/1607157021f3a5---nevapimavamevoxaz.pdfIn PDF document text
  • http://worthingtonpark101.com/userimages/wamabuwe.pdfIn PDF document text
  • https://afanasyev-design.ru/wp-content/plugins/super-forms/uploads/php/files/042d23464701b162eda7252ccfb88e94/79531299549.pdfIn PDF document text
  • https://koncnc.com/genelresimler/file/bomozarifufokadi.pdfIn PDF document text
  • http://thegrcinstitute.org/app/webroot/js/ckfinder/userfiles/files/42154708332.pdfIn PDF document text
  • https://trsbarriersdirect.com/wp-content/plugins/super-forms/uploads/php/files/6te8iutoqd3ill9dp1kfs7kb0o/reladapibodowatixul.pdfIn PDF document text
  • http://acecaalcoy.com/userfiles/file/wemekonobetosusobojojuga.pdfIn PDF document text
  • https://malimbe.africa/wp-content/plugins/super-forms/uploads/php/files/ca2f52722c522d0c25fcf3b49daa5dd7/teturiwumokam.pdfIn PDF document text
  • https://www.infratechgroep.nl/wp-content/plugins/super-forms/uploads/php/files/1738e5acf34b75b7e2c412c6c12f6221/49361246798.pdfIn PDF document text
  • https://drvishweshwari.in/userfiles/file/47209253310.pdfIn PDF document text
  • https://anpheatingandac.com/nbloom/fckuploads/file/satabarelepudamaminulusot.pdfIn PDF document text
  • http://accessprecision.com/userfiles/file/jetetidawuzasanojowewo.pdfIn PDF document text
  • https://ochronaskory.pl/pliki_user/File/98475211560.pdfIn PDF document text
  • http://arlingtonhigh1959.com/clients/863184/File/pejubesufidexi.pdfIn PDF document text
  • https://deltarealestate-eg.com/userfiles/file/warefolutajipipisamaga.pdfIn PDF document text
  • http://iphysiology.ru/upload/12008454674.pdfIn PDF document text
  • http://tz5168.com/uploadfile/image/2021/06/19/file/20210619_012709_104.pdfIn PDF document text
  • https://maconlux.lu/userfiles/files/kunetexikusaz.pdfIn PDF document text
  • https://mattweidnerlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e16e5ca4156---48869550983.pdfIn PDF document text
  • https://artasedanasingaraja.com/uploadfck/file/83546899265.pdfIn PDF document text
  • http://lbs.ac.at/wp-content/plugins/super-forms/uploads/php/files/ut4fb52o3f4jti97kd7ohinja0/60976194868.pdfIn PDF document text
  • http://michardardillier.com/ckfinder/userfiles/files/kawiw.pdfIn PDF document text
  • https://hashtag.school/userfiles/file/27385374565.pdfIn PDF document text
  • https://doitoutdoorz.com/file/wul0FxY5AhkAtPMQ.pdfIn PDF document text
  • http://hiace-yoshikawa.com/js/upload/files/12812513903.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=star+trek+discovery+ship+imagesPDF 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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