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
• Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
  PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 68 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
• 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 https://infrive.ru/uplcv?utm_term=puffin+browser+update PDF link annotation

  • https://www.bevillelecomte.ovh/ckfinder/userfiles/files/numexizot.pdfIn PDF document text
  • https://haps.company/wp-content/plugins/super-forms/uploads/php/files/53bcae5087832f5527c04bd353179ee8/71334469153.pdfIn PDF document text
  • http://montpellier-businessplan.fr/mbp/upload/images/images/upload/ckfinder/pebuwogonovipegefoku.pdfIn PDF document text
  • http://montesantangelo.it/files/files/59331796261.pdfIn PDF document text
  • http://www.thelawchamber.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614463ddaaed0---8615295346.pdfIn PDF document text
  • https://nacionalequipamentos.com/ckeditor/uploads/files/tatawozuvip.pdfIn PDF document text
  • http://pjteam.hu/uploads/tasidisa.pdfIn PDF document text
  • https://lorenzonimmigrationlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/161382ca69d70e---39414241668.pdfIn PDF document text
  • https://www.alongsideasia.com/wp-content/plugins/super-forms/uploads/php/files/c7798c14b56ccd7275d69e6d76353ee4/vosewuri.pdfIn PDF document text
  • http://turnwealthy.com/ckfinder/userfiles/files/puwufamemabepezul.pdfIn PDF document text
  • http://ventiliatoriai.lt/js/ckfinder/userfiles/files/15831062341.pdfIn PDF document text
  • https://epiphanych.com/images/file/folagazegusizufed.pdfIn PDF document text
  • http://shipsupply.ru/userfiles/files/gufurorerari.pdfIn PDF document text
  • http://xn--80aagkbrca3apkgkee0a1bi.xn--p1ai/ckfinder/userfiles/files/876057144.pdfIn PDF document text
  • http://ukkies.be/userfiles/file/7955511742.pdfIn PDF document text
  • http://lamorenj.com/userfiles/file/gumabofarizeganedevere.pdfIn PDF document text
  • https://kingcom.edesign.fr/gr33/web/uploads/assets/file/sanedazowama.pdfIn PDF document text
  • https://www.smartfutureexpo.com/ckfinder/userfiles/files/40291567195.pdfIn PDF document text
  • https://bomnuocebara.com/quangbasanpham/app/webroot/upload/image/files/pakexisolo.pdfIn PDF document text
  • http://newworldss.com/uploads/file/82265189417.pdfIn PDF document text
  • https://strechybenesov.cz/content/wiviliros.pdfIn PDF document text
  • https://stehovani-ostrava.cz/static_pages_files/file/7156820442.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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