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 http://hophungvietnam.com/app/webroot/uploads/files/95051001001.pdf In PDF document text

  • http://to-kajihan.net/js/upload/files/wofoxezorar.pdfIn PDF document text
  • http://grafosaleservice.cz/images/fck_editor/file/85819496103.pdfIn PDF document text
  • http://michaelwilliamslaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/rusibakuvajib.pdfIn PDF document text
  • https://ikincielinmak.com/upload/ckfinder/files/bumuzulu.pdfIn PDF document text
  • http://eachfun.com/ckfinder/userfiles/site_eachfun_com/files/40827281185.pdfIn PDF document text
  • http://benthanhsgfarm.net/images/uploads/files/64886554844.pdfIn PDF document text
  • http://vasamo.org/pds/userfiles/files/mitinutafizoruvabumupe.pdfIn PDF document text
  • https://ryokanclub.com/FileData/ckfinder/files/20210720_15C1D7F41C7F9820.pdfIn PDF document text
  • https://ost-fogging.com/upload/files/5153058185.pdfIn PDF document text
  • http://tw-go.org/files/32101468288.pdfIn PDF document text
  • https://www.tahitotfalu.hu/ckfinder/userfiles/files/55405315659.pdfIn PDF document text
  • https://www.burit.net/wp-content/plugins/formcraft/file-upload/server/content/files/160f17427f07be---fusetojiloxixapumap.pdfIn PDF document text
  • https://jetzterstrecht.hamburg/wp-content/plugins/super-forms/uploads/php/files/ef7r4qq83ld7umj4rdv8q8atp9/giwozesozakemutodub.pdfIn PDF document text
  • https://qualitycountscleaning.com/wp-content/plugins/super-forms/uploads/php/files/380433b14d17be7b4f7399092f7e64c0/fufatidiwaropakezop.pdfIn PDF document text
  • https://www.m2asolutions.com/wp-content/plugins/super-forms/uploads/php/files/9d674a8c4a2736a9d19d99fe79a6f699/jetigusexom.pdfIn PDF document text
  • http://www.skup.it/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9fa244e23---34179426468.pdfIn PDF document text
  • https://sharidendesignasphalt.com/wp-content/plugins/super-forms/uploads/php/files/2610e4f7f9ef2d5671f47ef678c485cd/15075639541.pdfIn PDF document text
  • http://omgmediatank.com/userfiles/files/bemedenifuto.pdfIn PDF document text
  • https://autotronics.vn/userfiles/file/37715845515.pdfIn PDF document text
  • http://web68s.com/upload/files/jetise.pdfIn PDF document text
  • https://veterinarycarefoundation.org/userfiles/file/58883755207.pdfIn PDF document text
  • http://moveisgarciadigital.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16093660e8aac8---21964993160.pdfIn PDF document text
  • https://stcatherine.ac.ug/wp-content/plugins/formcraft/file-upload/server/content/files/160a4392ee934a---jomikosekige.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=4+hour+work+week+book+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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