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://garglob.ru/uplcv?utm_term=activar+actualizaciones+automaticas+android PDF link annotation

  • http://www.phsdcenter.com/temp/js/ckfinder/userfiles/files/nivaxidigesuwenarodufobi.pdfIn PDF document text
  • http://speednewslive24.com/assets/ckfinder/core/connector/php/uploads/files/33916850668.pdfIn PDF document text
  • http://xinshifm.com/userfiles/file/zibabupujebij.pdfIn PDF document text
  • http://luckyassessoria.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613b82093808c---66370836565.pdfIn PDF document text
  • https://www.denisonlandscaping.com/wp-content/plugins/formcraft/file-upload/server/content/files/161369ccc78c41---dewefesagirapenavobumadi.pdfIn PDF document text
  • https://postelezmasivu-liberec.cz/ckfinder/userfiles/files/kotixejiwisopubebiza.pdfIn PDF document text
  • https://nvsrolko.org/ckfinder/userfiles/files/tipoxopowes.pdfIn PDF document text
  • http://palenice.net/obrazky_clanky/file/18862424568.pdfIn PDF document text
  • http://www.singchai.co.th/ckfinder/userfiles/files/39292811125.pdfIn PDF document text
  • https://fond.ru/userfiles/file/69615866273.pdfIn PDF document text
  • http://quartierdete.fr/uploads/fckeditor/file/ginejufunimiwawozawur.pdfIn PDF document text
  • https://hafa-verein.de/wp-content/plugins/super-forms/uploads/php/files/7152c4d11e39fbd5b584abb5ff416253/35379806905.pdfIn PDF document text
  • http://erimti.com/userfiles/file/96166746859.pdfIn PDF document text
  • http://lyzjkgm.com/d/files/31532494257.pdfIn PDF document text
  • https://goooinggroup.com/userfiles/files/20210904_010245.pdfIn PDF document text
  • http://xn--tnqz8hz5cb8l.com/upload/files/mudob.pdfIn PDF document text
  • http://lagostena.it/userfiles/files/besofeririwalonulola.pdfIn PDF document text
  • http://madurastones.com/userfiles/file/zizonepisexisuni.pdfIn PDF document text
  • http://veterinarioassociatopacinidallatorre.eu/userfiles/files/pipulenakawapo.pdfIn PDF document text
  • https://costarica4d.com/contents/files/naganotukipudixusiv.pdfIn PDF document text
  • https://angel-juicer.com/FileData/ckfinder/files/20210911_8553650AB4D07F6C.pdfIn PDF document text
  • http://solar-makernavi.com/ckfinder/userfiles/files/44864015890.pdfIn PDF document text
  • http://elementsgogreen.com/userfiles/file/34861963644.pdfIn PDF document text
  • http://kurumakaitori-one.com/js/upload/files/86755168369.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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