Malicious PDF — malware analysis report

Heuristics 7

• 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.
• 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://nakatarikaszel.pl/app/webroot/userfiles/file/54235181968.pdf In PDF document text

  • http://blow-w124.com/js/upload/files/69605875565.pdfIn PDF document text
  • https://xo-sound.ru/userfiles/file/fugumolimigajofe.pdfIn PDF document text
  • https://drisraadentalcenter.com/userfiles/file/zivivadopufaj.pdfIn PDF document text
  • http://kunbot.com/upload/files/61998089359.pdfIn PDF document text
  • https://hometutorsdelhi.com/userfiles/files/55807137864.pdfIn PDF document text
  • https://enerjimakine.com/tsrm1/img/userfiles/file/kidiwoxuwepapitow.pdfIn PDF document text
  • http://yeosingol.com/FileData/ckfinder/files/20210909_768481B54380B118.pdfIn PDF document text
  • http://ainut.fi/userfiles/file/rojakod.pdfIn PDF document text
  • http://xn--80aaaaaikdebj9ccf1ayja1b5a3q.xn--p1ai/ckfinder/userfiles/files/dilafinijesutewulime.pdfIn PDF document text
  • http://www.diplomat2014.ru/ckfinder/userfiles/files/jirekogane.pdfIn PDF document text
  • http://pascalparrot.com/uploads/assets/file/78007569835.pdfIn PDF document text
  • http://lucidarepavimentimarmogenovaealessandria.it/userfiles/files/25407210003.pdfIn PDF document text
  • http://aallergy.friend-match.com/upload/files/38538543547.pdfIn PDF document text
  • http://sorokolaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/17342200493.pdfIn PDF document text
  • http://rockbond-aac.com/id-admin/fckImages/file/nasejajuzidapabi.pdfIn PDF document text
  • http://kovove-ploty-brany-zabradli.cz/UserFiles/File/5069344885.pdfIn PDF document text
  • http://csim.jp/ckeditor/uploads/files/rigaxidavisajavapugufa.pdfIn PDF document text
  • https://masterjobintl.com/ckfinder/userfiles/files/2160335948.pdfIn PDF document text
  • http://ncfc.com.tr/ckfinder/userfiles/files/28451184370.pdfIn PDF document text
  • http://adhdesign.de/userContent/files/20210902143105-xupaf.pdfIn PDF document text
  • http://www.magicapro.it/wp-content/plugins/formcraft/file-upload/server/content/files/16142c49c7e1b7---zimejodajalobum.pdfIn PDF document text
  • http://chiron-ventures.com/chiron/home/img/upload/files/210909040347497145sgmp2.pdfIn PDF document text
  • http://abwmarlboropike.com/uploads/files/jirogufipulokamokagowejow.pdfIn PDF document text
  • http://jrpst.pl/userfiles/file/noxaxalowinedip.pdfIn PDF document text
  • http://xn--c1aejbdnke.xn--p1ai/admin/ckfinder/userfiles/files/goveguwitulotokoxidije.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=how+to+set+up+proxy+on+androidPDF 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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