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://crysiq.ru/uplcv?utm_term=subtract+fractions+from+mixed+numbers+worksheet PDF link annotation

  • https://aprilboya.com/userfiles/file/93151374606.pdfIn PDF document text
  • http://ambulatorioveterinariocigliano.com/userfiles/files/98398169597.pdfIn PDF document text
  • https://irish-setter-zucht.info/ckfinder/userfiles/files/53486222116.pdfIn PDF document text
  • https://veritiesinstitute.com/wp-content/plugins/super-forms/uploads/php/files/62dd4d56b003e8912880eb41c459332a/57704350252.pdfIn PDF document text
  • https://www.ferienhof-schneider.de/wp-content/plugins/formcraft/file-upload/server/content/files/160ffba18e9474---pumomasemamaruwif.pdfIn PDF document text
  • http://medicaldistri.com/ckfinder_files/files/99732720066.pdfIn PDF document text
  • http://saringkarnwood.com/UserFiles/file/julijajejodotozofijaga.pdfIn PDF document text
  • http://uyaviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c351901bbb6---65758222147.pdfIn PDF document text
  • http://gyobel.itpublic/file/63670732251.pdfIn PDF document text
  • https://vegan-eshop.cz/data/file/75009970168.pdfIn PDF document text
  • https://nscs.org/wp-content/plugins/super-forms/uploads/php/files/1f5d19effd1a77afe6c12e55fdab4a9d/laxexa.pdfIn PDF document text
  • https://webmodeli.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612be190c6243---fedejezapubelotevipajevar.pdfIn PDF document text
  • http://gospel-pour-100-voix.com/fichiers/newsletter/file/18652765962.pdfIn PDF document text
  • http://imi.vc/upload/files/potaviwubu.pdfIn PDF document text
  • https://www.properties-thassos.com/wp-content/plugins/super-forms/uploads/php/files/sddt66tmlnsp8oltc9klqe8kpl/77702555747.pdfIn PDF document text
  • https://zniczekowalczyk.com/user_images/file/77867494332.pdfIn PDF document text
  • http://bdn10.cz/files/file/bopemutaravidukesara.pdfIn PDF document text
  • http://velapower.com/glwh/UploadFile/file/2021082504255573499.pdfIn PDF document text
  • http://leoclubmarsala.it/userfiles/files/38977485336.pdfIn PDF document text
  • https://heritagelogs.com/wp-content/plugins/super-forms/uploads/php/files/atfag3a4gtnc9m97tqus886loe/61903206070.pdfIn PDF document text
  • http://ourconn.com/userfiles/file/202107291841225232.pdfIn PDF document text
  • http://philippinesroadshow.com/wp-content/plugins/super-forms/uploads/php/files/876f4835994fba461058ed4dc3ea2972/zotapoga.pdfIn PDF document text
  • http://contactconfiance.com/files/files/15949300302.pdfIn PDF document text
  • https://residenciasanamaro.es/userfiles/files/49148495448.pdfIn PDF document text
  • https://www.northwoodmedical.ca/wp-content/plugins/super-forms/uploads/php/files/ruh04criqgme2kvr0fb5a8hc2e/39583680683.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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