Malicious PDF — malware analysis report

Heuristics 8

• ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
• 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.
• 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 https://coretry.ru/uplcv?utm_term=the+pc+game+tekken+tag+tournament+2 PDF link annotation

  • https://hafa-verein.de/wp-content/plugins/super-forms/uploads/php/files/3d6d12bdf459aa0de4c608e3578694f1/22247574544.pdfIn PDF document text
  • https://lakecountyoralsurgery.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090e41338e3c---fibabazemo.pdfIn PDF document text
  • https://radmangroup-ye.com/rgfiles/file/pavuxosesima.pdfIn PDF document text
  • https://www.grandiosa.is/wp-content/plugins/super-forms/uploads/php/files/fehlig42arti7ir99gmdk30824/83145790581.pdfIn PDF document text
  • https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/4c15f80847fba0603b1961b45dee50c2/zilorez.pdfIn PDF document text
  • http://www.orarestauratorisaf.it/wp-content/plugins/formcraft/file-upload/server/content/files/1609d1c2fb472b---namubob.pdfIn PDF document text
  • https://takeorders.online/wp-content/plugins/super-forms/uploads/php/files/p1f826tshkedefaqdlv0ku1lo0/bafawalewafusi.pdfIn PDF document text
  • http://extreamtuning.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a363934e540---muxabularifuj.pdfIn PDF document text
  • https://www.sir.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16084b36f226c9---powuju.pdfIn PDF document text
  • https://www.siemers-deutschmann.de/wp-content/plugins/super-forms/uploads/php/files/hm5956ut60c864f32b22d2biju/93631709209.pdfIn PDF document text
  • https://astoriareiki.com/wp-content/plugins/super-forms/uploads/php/files/bc089c554219a14b6ab7735452b785b9/4749458883.pdfIn PDF document text
  • https://m-co.de/wp-content/plugins/super-forms/uploads/php/files/ocs5d7uluo7fnhjkcgl0o95m1p/jusubelosetuwuvifi.pdfIn PDF document text
  • http://www.nandomoraes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b804d715d66---gamopanumog.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/ugb69qtm9j21uc67n821k3e9u1/jovunopedodiravo.pdfIn PDF document text
  • https://www.pfgpartners.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1609a2038d9b8b---95481987410.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn PDF document text

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