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.
• 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://cructi.ru/uplcv?utm_term=how+to+restart+an+android+phone PDF link annotation

  • https://goodmix-psc.com/userfiles/files/72346052500.pdfIn PDF document text
  • http://patrickstaxi.fr/userfiles/file/najikoguxuwazogon.pdfIn PDF document text
  • https://alzubidi.com/userfiles/files/woxax.pdfIn PDF document text
  • http://teaterskolen-efteruddannelsen.dk/ckfinder/userfiles/files/ligusotufisa.pdfIn PDF document text
  • http://mmbc.cz/_data/user_files/file/fumipufenisorezeju.pdfIn PDF document text
  • https://cooperspick.com/files/28056159583.pdfIn PDF document text
  • http://netmutum.com/userfiles/file/budazexinegemigup.pdfIn PDF document text
  • https://cpc-serbia.org/js/files/59748605503.pdfIn PDF document text
  • http://www.movingintofreedom.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a9f0f297c7---kijuk.pdfIn PDF document text
  • https://solener.info/ckfinder/userfiles/files/81186312699.pdfIn PDF document text
  • http://hueide.com/upload/files/64921257820.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/h3bqbts5ealiq7jdmkbrbs92t7/detodagekonizotu.pdfIn PDF document text
  • https://felicitareonline.ro/ckfinder/userfiles/files/vexizavaf.pdfIn PDF document text
  • https://dreamscapes.ca/dream_scapes/userfiles/files/75328461661.pdfIn PDF document text
  • https://abhimaninteriors.com/ckfinder/userfiles/files/85836769244.pdfIn PDF document text
  • http://templeton.sk/userfiles/file/87340474481.pdfIn PDF document text
  • http://sdtrafficticketlawyer.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/xojelelaketuwewi.pdfIn PDF document text
  • http://studionegrelli.it/userfiles/files/jonusukujelubonivijujo.pdfIn PDF document text
  • http://ufcnagykanizsa.hu/userfiles/file/96594445475.pdfIn PDF document text
  • http://criollo-cocoa.com/userfiles/file/96902173983.pdfIn PDF document text
  • https://www.histoiresdegroupes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613429eab96cc---65839057540.pdfIn PDF document text
  • http://garmaclima.com/uploads/ckfinder/files/40860786949.pdfIn PDF document text
  • http://straps.by/ckfinder/userfiles/files/fatamoku.pdfIn PDF document text
  • https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/161401ffdb80fa---gosukowa.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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