Malicious PDF — malware analysis report

Heuristics 8

• ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
• 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.
• 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://cwlighting.com/wp-content/plugins/super-forms/uploads/php/files/155e58bf7ee9b82ef7cf7bdcc54f3258/67836607905.pdf In PDF document text

  • http://www.jacenter.org/js/ckfinder/userfiles/files/20401132493.pdfIn PDF document text
  • http://zaun-produzent.de/userfiles/file/42185712152.pdfIn PDF document text
  • http://irina-beha.com/ckfinder/userfiles/files/nesum.pdfIn PDF document text
  • https://www.rath-catering.de/wp-content/plugins/formcraft/file-upload/server/content/files/160ac8bc54458e---74165897033.pdfIn PDF document text
  • http://brette-animation.com/userfiles/file/puvizisewifinaw.pdfIn PDF document text
  • http://effektfilm.de/files/file/jefiwulopu.pdfIn PDF document text
  • https://rajatotogroup4.com/contents//files/70824253948.pdfIn PDF document text
  • http://goldenstarhotel.vn/images/uploads/files/54932889525.pdfIn PDF document text
  • https://jdbailbonds.com/wp-content/plugins/super-forms/uploads/php/files/c9091e0cfb5d699700fce17ed4750b82/19164131508.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/h3cu1m7s2sr0m6858biv58aja7/78334205626.pdfIn PDF document text
  • http://otohonda-phutho.com/upload/files/rawegitasadebemufuneven.pdfIn PDF document text
  • http://aitrans.org/UploadFile/file/F1202106292137487280.pdfIn PDF document text
  • https://5uempat.com/contents//files/71763483991.pdfIn PDF document text
  • http://radio-salsa.com/php/rs/filesupload/file/nilegaxexi.pdfIn PDF document text
  • https://brod-plovdiv.com/images/jajuvobarilarebunoze.pdfIn PDF document text
  • http://tachikawa-derma.biz/ckfinder/userfiles/files/mezefaxigoxedodiveg.pdfIn PDF document text
  • https://jaunimodienos.lt/wp-content/plugins/super-forms/uploads/php/files/ui15008keiu61vagh3p0016ldj/sezigemuvumowudanen.pdfIn PDF document text
  • http://rbtyutj01.com/userfiles/files/28149874658.pdfIn PDF document text
  • https://chicagoportablexray.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608377aa171c2---jugorafinolofik.pdfIn PDF document text
  • http://veronicanealhome.com/wp-content/plugins/formcraft/file-upload/server/content/files/2/16072f2870498e---89489931886.pdfIn PDF document text
  • http://thingsantiquesla.com/userfiles/files/74292475050.pdfIn PDF document text
  • https://specializedfacilitymgt.com/public_html/userfiles/file/83298269193.pdfIn PDF document text
  • http://densayhongngoai.com/uploads/userfiles/file/resudezi.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=upstream+proficiency+c2+test+booklet+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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