Malicious PDF — malware analysis report

Heuristics 7

• 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.
• 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://chcial.ru/uplcv?utm_term=how+to+use+the+hoover+smartwash+carpet+cleaner PDF link annotation

  • http://www.auditsi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093f5f774b31---fagorafujexuxu.pdfIn PDF document text
  • http://nutronicltd.com/userfiles/file/48608444819.pdfIn PDF document text
  • http://in-dapt.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089fde993878---42050832088.pdfIn PDF document text
  • http://airconbank.com/upload/fckeditor/file/16644084694.pdfIn PDF document text
  • http://sp2wronki.pl/fotki/fotki/file/83122909654.pdfIn PDF document text
  • http://doublehappyvstheinfinitesadness.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3d82c9f1a7---12259728469.pdfIn PDF document text
  • http://meadescafe.com/userfiles/file/7027145032.pdfIn PDF document text
  • https://www.blackandwhite-salon.com/wp-content/plugins/super-forms/uploads/php/files/tmp/guperexosubokufaz.pdfIn PDF document text
  • https://europacreativaeuskadi.eu/files/galeria/files/78685579693.pdfIn PDF document text
  • https://kaxtongroup.com/home5/maxconne/public_html/kaxtongroup/assets/images/newspostimages/files/54616485173.pdfIn PDF document text
  • http://venusland.vn/app/webroot/img/files/16708826563.pdfIn PDF document text
  • http://hasici-pristroje-eshop.cz/files/file/87963057314.pdfIn PDF document text
  • http://ltmetal.com/userfiles/files/75631820285.pdfIn PDF document text
  • https://hkbca.org/UploadFiles/file/20210727151243182.pdfIn PDF document text
  • https://www.funes.gob.ar/ckfinder/userfiles/files/10238440192.pdfIn PDF document text
  • http://billsky.ee/files/file/gitezezopixubagotiwuw.pdfIn PDF document text
  • http://duocthientam.com/uploads/ckfinder/files/kawipetetefipexepigo.pdfIn PDF document text
  • http://say-international.eu/userfiles/file/46410003822.pdfIn PDF document text
  • https://premiersuli.hu/files/files/kexogagagenoxafanifal.pdfIn PDF document text
  • http://anhuifan.com/upload_fck/file/2021-5-12/20210512183533577742.pdfIn PDF document text
  • https://limberhurstgallery.com/imageuploads/file/94908527719.pdfIn PDF document text
  • http://for-rent-leuven.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d2523a7b4db---sulopamo.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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