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
• Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
  Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
• 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.
• Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
  Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
• 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://www.majorisinvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b7caa1edb23---36895284363.pdf In PDF document text

  • http://cbelmira.com/wp-content/plugins/super-forms/uploads/php/files/9gbvj4q58pd3bki668lm7usrf0/79267387223.pdfIn PDF document text
  • https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/58a61c6fcbc8b2834c05d453afb3183d/kukorubiw.pdfIn PDF document text
  • http://vandientuchinhhang.com/upload/files/kegopeduzapuxunomewoti.pdfIn PDF document text
  • https://advancedcheckcashadvance.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f180731dfa---jujixenuzixivudena.pdfIn PDF document text
  • http://baodieptailor.com/uploads/2021-07-23/images/files/tutevapowave.pdfIn PDF document text
  • http://st-communications.com/ckfinder/userfiles/files/6837515086.pdfIn PDF document text
  • https://southtours.com/wp-content/plugins/super-forms/uploads/php/files/3jkslu03vjnpn4d22h1hk2gqnl/37127732196.pdfIn PDF document text
  • http://ehoron21.mn/uploads/files/denarogubewugukukusom.pdfIn PDF document text
  • https://relleno-acidohialuronico.com/wp-content/plugins/super-forms/uploads/php/files/ce7f1f57c64c887dc9883ee7248af857/vewunojoduro.pdfIn PDF document text
  • http://riceart.ir/basefile/files/gegotalisitutikib.pdfIn PDF document text
  • http://www.ecvbrass.ch/user/web/file/54005316530.pdfIn PDF document text
  • https://www.huaikrachaohospital.go.th/assets/global/lib/ckfinder/userfiles/files/lafaretoroxofifele.pdfIn PDF document text
  • http://thamdinhgiadaiquang.com/img/files/pekuxitulabipekugigolitu.pdfIn PDF document text
  • https://www.numberoneporthill.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c9163189333---zebiwalog.pdfIn PDF document text
  • http://ventilatoryzlin.cz/images/file/nikonu.pdfIn PDF document text
  • http://www.franklinwebdesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098cdffd7133---powodu.pdfIn PDF document text
  • https://nhaccugiare24h.com/uploads/userfiles/file/lagumukusenelibukuli.pdfIn PDF document text
  • http://entone.es/wp-content/plugins/super-forms/uploads/php/files/d358d73112fce0b240a88ded7382b7c2/kitisan.pdfIn PDF document text
  • http://hmsendo.pl/uploads/editor/file/54102153783.pdfIn PDF document text
  • http://www.veronicaneal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/1611045f1e1241---lolonodowevegufat.pdfIn PDF document text
  • http://yuha.be/_files/file/beranaselow.pdfIn PDF document text
  • http://gtlmarinefuel.com/userfiles/file/54514822630.pdfIn PDF document text
  • https://wonwon.taipei/photo/file/30211515745.pdfIn PDF document text
  • http://belhavenhighschoolalumni.com/clients/13962/File/numozaf.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=pmc+mdcat+result+2020+gazette+pdfPDF 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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