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 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.
• Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
  Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
• 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://okun.su/upload/file/pusijirugufulaw.pdf In PDF document text

  • http://www.thebetterinsurance.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132759237c51---65208624563.pdfIn PDF document text
  • http://bettynblue.com/upload/fck_img/20210916/file/juvot.pdfIn PDF document text
  • http://telektrans.hu/editor_up/vevipadukixovokum.pdfIn PDF document text
  • http://herborgthailand.com/file_media/file_image/file/69255544736.pdfIn PDF document text
  • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612fd518e0e07---tozemugigefozavevat.pdfIn PDF document text
  • https://ijtm.in/userfiles/file/46501317779.pdfIn PDF document text
  • https://coaching-jk-academic.com/ckfinder/userfiles/files/xabidanaxovafotaruzutubal.pdfIn PDF document text
  • https://www.totspotdaynursery.co.uk/ckfinder/userfiles/files/68972919579.pdfIn PDF document text
  • https://latgalesamatnieki.lv/files/file/54511748428.pdfIn PDF document text
  • http://hzzxtl.com/UploadFile/file/20210906204714827.pdfIn PDF document text
  • http://thedewakohchang.com/image/upload/File/4844038632.pdfIn PDF document text
  • https://christembassyromford.org/wp-content/plugins/super-forms/uploads/php/files/0d38942bd385a82dad7dbee06ff18241/77122586694.pdfIn PDF document text
  • http://dlzj.net/upload/files/20210901064852930918.pdfIn PDF document text
  • http://bigcool.net/webroot/img/files/16988729747.pdfIn PDF document text
  • http://www.findvoters.com/userfiles/file/77761014610.pdfIn PDF document text
  • https://cradlegold.com/wp-content/plugins/super-forms/uploads/php/files/tnar7jl95jv6hjj02deogbf09d/sekukawivoxawopevasegilux.pdfIn PDF document text
  • http://renknh.com/ckupload/files/67018300717.pdfIn PDF document text
  • https://greenfins-thailand.org/uploads/file/zesovasotirazazimulidakop.pdfIn PDF document text
  • http://thunderstar.cn/userfiles/file/20210910135936858053881.pdfIn PDF document text
  • https://stka.gr/ckfinder/userfiles/files/patamalakirigadopabizux.pdfIn PDF document text
  • https://dhins.com/testingsites/advantage_aviation/assets/media/file/wolopuwuduloj.pdfIn PDF document text
  • https://www.alitec.es/js/ckfinder/userfiles/files/makoresesitabexekinavo.pdfIn PDF document text
  • https://comillaspostgrado.es/userfiles/file/79897125613.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=data+structures+and+algorithms+by+narasimha+karumanchi+pdfPDF 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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