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 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.
• Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
  Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
• 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://chcial.ru/uplcv?utm_term=samsung+j2+flash+file+download PDF link annotation

  • http://soloparamideco.com/js/new/fckeditor/userfiles/file/gumiloke.pdfIn PDF document text
  • http://uran-berlin.com/userfiles/file/lovusiwuwukimivotelobob.pdfIn PDF document text
  • https://binarbaidservices.com/public_html/userfiles/file/kazomivixopumoxo.pdfIn PDF document text
  • https://laplacedesstores.com/upload/file/55782517364.pdfIn PDF document text
  • https://livres-arts.com/ckfinder/userfiles/files/8275173252.pdfIn PDF document text
  • https://atputasbaze.lv/images/userfiles/files/4230645844.pdfIn PDF document text
  • http://zvaracskaskola.eu/editor_uploads/system/files/9220125823.pdfIn PDF document text
  • http://tylincms.com/userfiles/files/58122025125.pdfIn PDF document text
  • http://elosc.com/upFile/file///ITX202109042351599263.pdfIn PDF document text
  • http://zzzwchem.com/upload/files/89156184388.pdfIn PDF document text
  • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/161341eab977b9---ravarevawafugotafipakimid.pdfIn PDF document text
  • http://liveisagenix.com/ckfinder/userfiles/files/geroguwediviliruxa.pdfIn PDF document text
  • http://spodne-pradlo-2bpoint.sk/UserFiles/File/govebexix.pdfIn PDF document text
  • http://herodumpsterrental.com/wp-content/plugins/super-forms/uploads/php/files/7a24ec0e4fdfd57ff5c942b403c12a31/susujevekipol.pdfIn PDF document text
  • http://susasoft.com/upload/userfiles/files/44459427091.pdfIn PDF document text
  • https://hafa-verein.de/wp-content/plugins/super-forms/uploads/php/files/26364e6f22cabb981aee6bd0d3e417de/pulumagopixinowevaxomilo.pdfIn PDF document text
  • http://www.motocams.cz/ckfinder/userfiles/files/14370651164.pdfIn PDF document text
  • http://ptsound.com/plugins/ckfinder/userfiles/files/6680817634.pdfIn PDF document text
  • http://lohoithaiduong.com/uploads/files/togikimem.pdfIn PDF document text
  • http://seamacros.com/upload/file/wotubufabapopamole.pdfIn PDF document text
  • https://kemxoi.vn/app/webroot/files/images/pages/files/48598646806.pdfIn PDF document text
  • https://marksiegeldds.com/wp-content/plugins/super-forms/uploads/php/files/bdf503380ff3434338e8cb5ecf09da52/56260831589.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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