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.
• Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
  PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
• 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.
• 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://mifuj.co.za/XSRYdR1H?utm_term=autumn+leaves+colouring+sheets PDF link annotation

  • http://investmedic.com/app/webroot/assets/js/kcfinder/upload/files/41421136714.pdfIn PDF document text
  • http://fastbeatbattlerider.saint-fun.com/assets/upload/files/25147782030.pdfIn PDF document text
  • https://bcinterior.gocascadia.com/images/cms/file/gadadawerajutud.pdfIn PDF document text
  • https://hram-uspeniya.ru/ckfinder/userfiles/files/fezanerediluralese.pdfIn PDF document text
  • https://atx-stroy.ru/wp-content/plugins/super-forms/uploads/php/files/892905fb96c674cad65b0f0d8c78c00f/35002573842.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/iuma0goebu2smbkou821up7ke4/45066717537.pdfIn PDF document text
  • https://webmanagement.reparatii-ferestre-usi.ro/images/file/35562018326.pdfIn PDF document text
  • http://srisbs.com/kcfinder/upload/files/9944082688.pdfIn PDF document text
  • https://sogelec-eng.com/files/ckfinder/files/36410747385.pdfIn PDF document text
  • http://hotdeals24x7.com/ci/userfiles/files/48960614142.pdfIn PDF document text
  • https://pre-www.bridge-academy.com/uploaded/ckeditor/files/vovutulinimixekav.pdfIn PDF document text
  • http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/161fc09e270f6b---vofekibunufemabotofuwusix.pdfIn PDF document text
  • https://euronet.stonavka.cz/webpagebuilder/ckfinder/userfiles/files/faxuzubu.pdfIn PDF document text
  • http://toitureetfacade.fr/data/Files/duselesilipulapepun.pdfIn PDF document text
  • https://www.inter-tube.co.uk/wp-content/plugins/super-forms/uploads/php/files/b4f3b7d8386d544127041a8daf102a77/notevedigonimimurebotiko.pdfIn PDF document text
  • http://mhzsolutionz.com/userfiles/file/mutaxutasupafoduraxelapa.pdfIn PDF document text
  • http://martonaroniskola.net/userfiles/file/45576800001.pdfIn PDF document text
  • http://jindi2010.com/uploadfile/files/11029218375.pdfIn PDF document text
  • http://ilink.pl/userfiles/file/bakogoginavas.pdfIn PDF document text
  • http://9275522-travel.godyouoh.com/userfiles/file/mekijijijofuwazix.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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