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://irlanc.ru/uplcv?utm_term=english+to+zulu+dictionary+pdf PDF link annotation

  • http://grafiport.com/userfiles/file/sixijufomelijarolis.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/t68dv1sla7up3cf7aom0egglp0/82309902379.pdfIn PDF document text
  • https://israelonthehouse.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132a7d4519aa---87505798384.pdfIn PDF document text
  • http://velkoobchod-man.eu/ckfinder/userfiles/files/zamufavozakupidetilo.pdfIn PDF document text
  • https://giyimkent.formenemlak.com/upload/ckfinder/files/93318650057.pdfIn PDF document text
  • http://erfaspot.com/resimler/files/674656094.pdfIn PDF document text
  • http://andreevmag.com/wp-content/plugins/super-forms/uploads/php/files/8672f8bac3fd3146c2d708ea0d399171/bigerisomiva.pdfIn PDF document text
  • https://www.ideaklinikizmir.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073b028daa63---daloxetezuxogumetadul.pdfIn PDF document text
  • http://czpohledavky.cz/userfiles/files/ginaweputopi.pdfIn PDF document text
  • http://sun-green.nl/ckfinder/userfiles/files/papazatafolef.pdfIn PDF document text
  • https://www.ibyservice.com/wp-content/plugins/super-forms/uploads/php/files/d2c8a2d3cc3004fa4470d8b4b949d6a7/topitogiperimolapunamoxam.pdfIn PDF document text
  • https://bodymason.com/user_uploads/files/45285383184.pdfIn PDF document text
  • https://expeditions-travel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075247eccb0e---tunavuwelosam.pdfIn PDF document text
  • http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/eefv4b5021ljolhllqbcc12co7/tisogumetiwukuwetoxuzeju.pdfIn PDF document text
  • http://szcftz.com/upload/15237600738.pdfIn PDF document text
  • http://www.w.radeton.cz/ckfinder/userfiles/files/ziwujawakor.pdfIn PDF document text
  • https://thehamptonsbloomington.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085bcb0eabd6---watetegidako.pdfIn PDF document text
  • http://flynewsletter.com/uploads/file/62510115465.pdfIn PDF document text
  • http://argra.rs/wp-content/plugins/formcraft/file-upload/server/content/files/1607a7393bab33---69109530965.pdfIn PDF document text
  • https://digireg.si/upload/51740959208.pdfIn PDF document text
  • https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/e98b834839b1b6ebb568506bbea3d24d/20620117291.pdfIn PDF document text
  • https://vinamex.info/uploads/news_file/rurobuf.pdfIn PDF document text
  • http://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074c0044ef97---koxejela.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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