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.
• Embedded JS stream low PDF_JS
  PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
• 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 http://ychnjl.net/userfiles/files/mekejibexesawovi.pdf In PDF document text

  • http://bubb.cn/up_file/file/diberudububixeziwozes.pdfIn PDF document text
  • https://ikansambel.com/contents/files/65999685742.pdfIn PDF document text
  • http://witnesstherealist.com/wp-content/plugins/super-forms/uploads/php/files/248eafafecc4afa03e15915c3b3e8f80/18347721176.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/s73jkm6rrhls6vensofemq67c0/76636203262.pdfIn PDF document text
  • http://ipcmanpower.com/admin/style/images/userfiles/file/bivigufufosagat.pdfIn PDF document text
  • https://open-call.fr/uploaded/files/31489104218.pdfIn PDF document text
  • http://orikon.net/Images_upload/files/33744902790.pdfIn PDF document text
  • https://hanomanberjaya.com/contents/files/xuvetobokar.pdfIn PDF document text
  • https://perfecthospitals.org/ckfinder/userfiles/files/96170169526.pdfIn PDF document text
  • http://impactpluslearning.com/ckfinder/userfiles/files/dowoza.pdfIn PDF document text
  • http://www.catalogodecineargentino.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140d12618b16---kimipaluti.pdfIn PDF document text
  • http://bio86.fr/userfiles/fichiers/3910246884.pdfIn PDF document text
  • http://esistore.de/userfiles/file/zejubukebaguk.pdfIn PDF document text
  • http://saga.diamonds/uploads/ckfinder/files/xesexasujewudimofi.pdfIn PDF document text
  • https://trucraftsmanship.com/wp-content/plugins/formcraft/file-upload/server/content/files/16146337c6ded6---27199608194.pdfIn PDF document text
  • http://komputerzagrosze.pl/userfiles/file/mumusodulalixuzite.pdfIn PDF document text
  • https://hmv.ir/wp-content/plugins/formcraft/file-upload/server/content/files/1614af1390b47e---10245599685.pdfIn PDF document text
  • http://servicedental.it/userfiles/files/43939138220.pdfIn PDF document text
  • http://tanabuauto.com/js/upload/files/sekupaduvamalewaxaluwofi.pdfIn PDF document text
  • https://partnermind.cz/images/files/pefafamewamoxakama.pdfIn PDF document text
  • https://ccichn.vn/data/upload/file/25287950700.pdfIn PDF document text
  • https://fond.ru/userfiles/file/96356767531.pdfIn PDF document text
  • http://olympicburger1988.com/uploads/files/58048639224.pdfIn PDF document text
  • http://tangiahoang.com/skinkorea/Images_upload/files/vekaninupojeximit.pdfIn PDF document text
  • https://travelselection.us/wp-content/plugins/formcraft/file-upload/server/content/files/1613ffec64cf37---zirojonokufolalixixiw.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=como+eliminar+iconos+duplicados+en+androidPDF 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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