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://nirkongrp.com/ckfinder/userfiles/files/68013636255.pdf In PDF document text

  • http://www.stemcellhairclinic.com/files/files/17836702059.pdfIn PDF document text
  • https://ww150007.linebot.net/upfile/files/20210910192939.pdfIn PDF document text
  • https://marciasmithconsulting.com/wp-content/plugins/super-forms/uploads/php/files/3bd90bf4ebf01ab55419d37b4e2b5f50/41898881456.pdfIn PDF document text
  • http://teormech.ru/teormech/usrimg/file/13525405821.pdfIn PDF document text
  • http://willowslakerhea.org/userimages/10049501237.pdfIn PDF document text
  • https://lynnesnaturaltreats.com.au/wp-content/plugins/super-forms/uploads/php/files/4c21b0398132db9e915118132fa68668/87981142548.pdfIn PDF document text
  • http://bimbrlata.cz/UserFiles/File/97453050980.pdfIn PDF document text
  • https://needlugs.com/userfiles/files/50448929182.pdfIn PDF document text
  • http://mxag.com/upload/browse/file/mepoxevubuxirixif.pdfIn PDF document text
  • https://omegaplus.bg/uploads/pages/files/tudoxanazuton.pdfIn PDF document text
  • https://avukatwebsitesi.kocgrafik.net/upload/files/javub.pdfIn PDF document text
  • http://gt-outillages.fr/ressource/site-image/files/88379187233.pdfIn PDF document text
  • https://maurinet.com/userfiles/file/61273651075.pdfIn PDF document text
  • http://nzozkrowodrza.pl/uploads/editor/file/33921927180.pdfIn PDF document text
  • http://yuqiaohome.com/uploads/files/202109050736199821.pdfIn PDF document text
  • http://lucidarepavimentimarmogenovaealessandria.it/userfiles/files/ronoreruraxeket.pdfIn PDF document text
  • https://ajitcoatings.com/uploads/fewaxogekipolapifole.pdfIn PDF document text
  • http://wernersuarez.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/kudutowari.pdfIn PDF document text
  • https://www.eos.org.eg/ckfinder/userfiles/files/27250589555.pdfIn PDF document text
  • https://lalicorne-hotel.com/userfiles/file/80291828044.pdfIn PDF document text
  • https://cananalimdar.com/wp-content/plugins/super-forms/uploads/php/files/r5talams5ib6um9ss44mmojl4k/pelajedudavopiwar.pdfIn PDF document text
  • https://cashcruis.ru/wp-content/plugins/super-forms/uploads/php/files/1802f177fc19fadac0104e43ed3354fc/29511711835.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=vpn+apk+pro+2020PDF 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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