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 to algorithmically-generated URL high PDF_RANDOM_URL_LINK
  PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
• 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.
• 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://mifuj.co.za/YmrXLWy8?keyword=relative%20clauses%20exercises%20defining%20and%20non%20defining%20exercises%20pdf%20printable PDF link annotation

  • https://raxokada.weebly.com/uploads/1/3/1/4/131409035/6618465.pdfIn PDF document text
  • https://www.steyr-mannlicher.hu/admin/kcfinder/upload/files/zorarekipateran.pdfIn PDF document text
  • https://pelletier-tp.fr/ckfinder/userfiles/files/26280104657.pdfIn PDF document text
  • http://debeight.net/UserFiles/File/14804050297.pdfIn PDF document text
  • http://ricarda-allegra.de/userfiles/file/lijiguzubat.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/37ta9ehojv791r7a5e2pqs6hv1/25415779354.pdfIn PDF document text
  • http://sm.ac.th/ckfinder/userfiles/files/rowevajofizaxirubiv.pdfIn PDF document text
  • https://www.thecandystoresudbury.com/wp-content/plugins/super-forms/uploads/php/files/6m9r1tldkj3hvk0p4ej6ihdju5/34581598366.pdfIn PDF document text
  • https://jdbailbonds.com/wp-content/plugins/super-forms/uploads/php/files/e923aa3264a30a1442d4234fbb517679/90960886963.pdfIn PDF document text
  • http://www.peritaonline.es/ckfinder/userfiles/files/fawodavepuvobumubaje.pdfIn PDF document text
  • https://moruslondinium.org/img/files/46202383591.pdfIn PDF document text
  • https://vebipebetas.weebly.com/uploads/1/3/4/0/134012388/558832.pdfIn PDF document text
  • http://recamonde.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161ff577753779---vasuradipapuxowadibilafit.pdfIn PDF document text
  • https://aristi-trap.com/upload/users/files/bibiwimisoze.pdfIn PDF document text
  • https://nusantarabet4d1.com/contents/files/pefefexoxuxuv.pdfIn PDF document text
  • https://rurusoweloxefug.weebly.com/uploads/1/3/3/9/133989150/sisasimude.pdfIn PDF document text
  • http://emannsltd.com/userfiles/66115386574.pdfIn PDF document text
  • http://indah-education.nl/userfiles/file/kimevatesipojujiwavoxiw.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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