Malicious PDF — malware analysis report

Heuristics 8

• 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 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.
• Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
  Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
• 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.
• 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://pixomot.ru/uplcv?utm_term=placement+test+english+level+b1+pdf PDF link annotation

  • https://cafemocion.com/userfiles/file/56988468992.pdfIn PDF document text
  • https://salubrismd.com/wp-content/plugins/super-forms/uploads/php/files/ef3e3a3234dddf85b1e1cf6ceb4b10e6/71141445912.pdfIn PDF document text
  • http://jumpinfit.it/userfiles/files/xururopasomirivozu.pdfIn PDF document text
  • http://criollo-cocoa.com/userfiles/file/45575610362.pdfIn PDF document text
  • http://novehorizonty.sk/userfiles/file/23751155347.pdfIn PDF document text
  • http://wsp.pl/userfiles/file/voxed.pdfIn PDF document text
  • http://ahxxzx.com/userfiles/202107/file/32970318174.pdfIn PDF document text
  • http://bhk-aindling.de/userfiles/files/72537980919.pdfIn PDF document text
  • http://datcat.vn/2018/file/70932310000.pdfIn PDF document text
  • https://www.nosolodespedidas.es/wp-content/plugins/formcraft/file-upload/server/content/files/1606e734f126c5---mikuvemozi.pdfIn PDF document text
  • http://baocaosudanang24h.com/uploads/image/files/61563023802.pdfIn PDF document text
  • https://feldmann-spedition.de/pics/userfiles/file/xomaminusunajep.pdfIn PDF document text
  • http://lucidareemantenerepavimentifaidate.it/userfiles/files/lixukajuto.pdfIn PDF document text
  • http://spielundlicht.de/content_provider/documents/files/11600848277.pdfIn PDF document text
  • https://motionslam.com/wp-content/plugins/super-forms/uploads/php/files/e1e1620549a570daf62f6ab7f65f94e1/girupara.pdfIn PDF document text
  • https://globalclassic.org/wp-content/plugins/super-forms/uploads/php/files/j9pk4kgeevm6u1lb1bunv7o3bp/98609222901.pdfIn PDF document text
  • http://adhdesign.de/userContent/files/20210624021246-wufiwuv.pdfIn PDF document text
  • http://maytinhtuyenquang.com/home/maytinhtuy/domains/maytinhtuyenquang.com/public_html/images/file/tokipun.pdfIn PDF document text
  • http://klick-tipp.info/ckfinder/userfiles/publics/files/20528194878.pdfIn PDF document text
  • https://rosycaffe.com/file/29180487542.pdfIn PDF document text
  • https://pediatricpotentialsnj.com/PP/PPpng/files/xebagonufonifevez.pdfIn PDF document text
  • http://agapetown.net/ckfinder/userfiles/files/sinodazipapukeled.pdfIn PDF document text
  • http://naviway.su/upload/files/dazaritizuvotavelo.pdfIn PDF document text
  • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/161031c9e1bfee---44517002433.pdfIn PDF document text
  • http://spellenindex.nl/images/uploads/84584090814.pdfIn PDF document text
  • https://upbilbao.com/ckfinder/userfiles/files/40577128364.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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