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
• 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.
• Callback phishing phone lure medium SE_CALLBACK_LURE
  Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
• 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://wedding-photos.cz/userfiles/file/930317986.pdf In PDF document text

  • http://ambulatorioveterinariovianello.eu/userfiles/files/wopakuwir.pdfIn PDF document text
  • http://suvagcentr.ru/userfiles/files/74720877118.pdfIn PDF document text
  • http://blossomtour.net/FileData/ckfinder/files/20210902_07070F9B374AFFC9.pdfIn PDF document text
  • http://www.miamiairportlimo.net/wp-content/plugins/formcraft/file-upload/server/content/files/16134ecb612654---82391181343.pdfIn PDF document text
  • https://lecormier-menuiserie.com/www/upload/files/82444133380.pdfIn PDF document text
  • http://metallpress.ru/files/gobewavelubebasip.pdfIn PDF document text
  • https://1sis.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613033af29464---50783818794.pdfIn PDF document text
  • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/k7ed66ucnhe2vn0u3l2d2990u1/1363494846.pdfIn PDF document text
  • http://jinyudachem.com/upload/files/8253156251.pdfIn PDF document text
  • https://laser123.com/geektic/files/33884239551.pdfIn PDF document text
  • http://qataminational.com/uploaded_files/userfiles/files/sapaluviposu.pdfIn PDF document text
  • http://augustaelectricalwork.com/editorData/file/lunofogojiboluzujiva.pdfIn PDF document text
  • https://happycondo.leaddeehub.com/userfiles/files/44862245811.pdfIn PDF document text
  • http://sutinlawkrabi.com/ckfinder/userfiles/files/84757235854.pdfIn PDF document text
  • https://jxlmedu.com/file/files/20210901_230312.pdfIn PDF document text
  • http://ahzycw.com/upload_fck/file/2021-9-7/20210907210405605142.pdfIn PDF document text
  • https://pavaniautismschools.com/wp-content/plugins/super-forms/uploads/php/files/litntodhglfmtk8rt5kkg9ubur/23268427037.pdfIn PDF document text
  • https://artistaone.co/userfiles/files/sopezadewotigarudopubaz.pdfIn PDF document text
  • https://anthonygillant.com/userfiles/file/fezomefasibexolidageso.pdfIn PDF document text
  • http://vasset.bg/userfiles/file/2452819705.pdfIn PDF document text
  • http://wasserentkalkung.at/ckfinder/userfiles/files/1996406824.pdfIn PDF document text
  • http://www.zaluziemalina.cz/userfiles/file/2388693688.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=parking+enforcement+hoursPDF 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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