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 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://nhaban24h.com.vn/wp-content/plugins/super-forms/uploads/php/files/752h7id66n56mcotgi5sk52ci9/17551065325.pdf In PDF document text

  • http://thestarbusan.net/FileData/ckfinder/files/20210820_8C1AD7C1F5DBB600.pdfIn PDF document text
  • http://worksafeorg.com/wp-content/plugins/super-forms/uploads/php/files/3sdhamsgfmkkqmvj9mhj1srb20/xofunaduno.pdfIn PDF document text
  • http://vetportonaccio.it/userfiles/files/wijuxiwizalimikobabo.pdfIn PDF document text
  • http://ahdongjiu.com/upload_fck/file/2021-5-16/20210516094846297419.pdfIn PDF document text
  • https://penal-garazh.ru/files/87916295696.pdfIn PDF document text
  • https://marblobathware.com/app/webroot/img/files/22204172652.pdfIn PDF document text
  • https://santa.my/images/users/00000000/files/83379263947.pdfIn PDF document text
  • http://www.phsdcenter.com/temp/js/ckfinder/userfiles/files/38392840594.pdfIn PDF document text
  • https://granitnet.hu/editor_up/57540309440.pdfIn PDF document text
  • http://fresh-j.info/images/uploadedimages/file/5311425049.pdfIn PDF document text
  • http://www.phonefixcomo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608576c9a7285---gikupuval.pdfIn PDF document text
  • https://bloomland.com/sites/bloomland.com/files/mukibujoruvefabeje.pdfIn PDF document text
  • https://kfz-gutachter-oliver-schiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609823531a880---22746273992.pdfIn PDF document text
  • http://al-farh-iq.com/upload/userfiles/file/9857764375.pdfIn PDF document text
  • https://whitesal.com/data/images/file/6549_20210525041342.pdfIn PDF document text
  • https://yourlightingbrand.com/wp-content/plugins/super-forms/uploads/php/files/7e23225a9ee0dff83038d80c860da535/73871749401.pdfIn PDF document text
  • http://ipjanah.ir/wp-content/plugins/super-forms/uploads/php/files/f60phqg9q9p6sg29q84bm42vr6/30883993444.pdfIn PDF document text
  • http://ricoconsultingattorney.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/5096551221.pdfIn PDF document text
  • https://www.chartsunlimited.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/160a4813585a05---83421426914.pdfIn PDF document text
  • http://stolizstekla.ru/userfiles/file/tevurizelo.pdfIn PDF document text
  • http://pck.malopolska.pl/wp-content/plugins/super-forms/uploads/php/files/1cac96003a416865f7f78f2a0a5a26ad/52928803403.pdfIn PDF document text
  • https://sellerflows.com/wp-content/plugins/super-forms/uploads/php/files/ae12668071b80518c5c799fb5adf6d9d/zezope.pdfIn PDF document text
  • https://nikken-engineer.jp/export/sd205/www/jp/r/e/gmoserver/8/6/sd0748886/nikken-engineer.jp/fckeditor/upload/file/63687976659.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=acrobat+pdf+editor+pricePDF 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.netReferenced by PDF JavaScript
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseReferenced by PDF JavaScript

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