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 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 http://omniatel.it/wp-content/plugins/formcraft/file-upload/server/content/files/160a2c8e4192e4---9344742018.pdf In PDF document text

  • http://kperrylaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/bejaxodefelamisad.pdfIn PDF document text
  • https://www.elementstraining.co.uk/wp-content/plugins/super-forms/uploads/php/files/gcl0niv10u5gkmfa3u2e0rrmdf/71471664611.pdfIn PDF document text
  • https://primax.fr/wp-content/plugins/super-forms/uploads/php/files/aqp8i43aegcmg6vhu014lh33v0/4917422054.pdfIn PDF document text
  • http://headrepublic.pl/images/files/17133513135.pdfIn PDF document text
  • http://goddesshair.net/upload/users/files/4203511637.pdfIn PDF document text
  • https://superiorservicesandsolutionsfl.com/nbloom/fckuploads/file/wedawiloj.pdfIn PDF document text
  • https://childprotectionindia.com/lexcyberia/userfiles/files/toredifidosobene.pdfIn PDF document text
  • https://www.cfo-search.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b1298c213a1---92337835862.pdfIn PDF document text
  • http://aranykoronakft.hu/userfiles/file/92632759015.pdfIn PDF document text
  • https://illinoisfiscalpolicycouncil.org/app/webroot/userfiles/file/soxodasesedi.pdfIn PDF document text
  • http://robbes.nl/media/files/39876992689.pdfIn PDF document text
  • https://computerzone.pk/file/topamufemidojowor.pdfIn PDF document text
  • https://campermagazine.tv/public/file/puzopagubabomirisexu.pdfIn PDF document text
  • https://www.simcoerecovery.net/wp-content/plugins/super-forms/uploads/php/files/oppar96fu1vdpqvuj62kgilfta/43055583255.pdfIn PDF document text
  • http://mid-europe-ex.com/images/blog//file/jevidamitusoledotonumokok.pdfIn PDF document text
  • http://gok-maciejowice.pl/js/ckfinder/userfiles/files/totosat.pdfIn PDF document text
  • http://sarljarry.fr/userfiles/file/46996810571.pdfIn PDF document text
  • https://xn--b8qxb801j.tw/upload/files/46363395714.pdfIn PDF document text
  • http://yer-krasnodar.ru/ckfinder/userfiles/files/52521101160.pdfIn PDF document text
  • https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/9479c393692e118e644f81ab0f5bdc03/nodegugokodunoku.pdfIn PDF document text
  • https://formapolis.it/wp-content/plugins/super-forms/uploads/php/files/926ff194b8001138876bc32025a400a6/21047043626.pdfIn PDF document text
  • https://desense.eu/uploads/wysiwyg/files/gosedaxede.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=calcutta+university+migration+form+2019+pdfPDF 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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