Malicious PDF — malware analysis report

Heuristics 7

• 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.
• 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://drafthe.ru/uplcv?utm_term=mmse+testi+pdf PDF link annotation

  • http://planet-for-events.de/userfiles/file/rutuxesotosoratazibe.pdfIn PDF document text
  • https://www.ideaklinik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1612eae339978e---75966479910.pdfIn PDF document text
  • http://sm.ac.th/ckfinder/userfiles/files/lijizizodupuxerazexirenif.pdfIn PDF document text
  • http://www.altrus.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1607dfc7a95a76---19593434050.pdfIn PDF document text
  • https://dewalt-naradi.cz/media/upload/editor/file/15286837647.pdfIn PDF document text
  • http://langfordfinancialservices.com/userfiles/files/32744182682.pdfIn PDF document text
  • http://clinicaveterinariacittadivignola.com/userfiles/files/tumakigot.pdfIn PDF document text
  • http://autoklej.pl/app/webroot/media/files/16717554293.pdfIn PDF document text
  • https://www.fmworks.com.tr/wp-content/plugins/super-forms/uploads/php/files/dvkpsg5r0d5k2llsp3kmglc8a6/34610781128.pdfIn PDF document text
  • https://lerong.vn/wp-content/plugins/super-forms/uploads/php/files/2ab9a5567702046872c348da51558f83/sojojurivobivug.pdfIn PDF document text
  • http://marthomaiticherukole.com/userfiles/file/61987263062.pdfIn PDF document text
  • http://24hnbc.com/assets/ckfinder/core/connector/php/uploads/files/rowokizaro.pdfIn PDF document text
  • http://ecogestval.com/userfiles/file/94328413538.pdfIn PDF document text
  • http://careerdynamic.com/clients/3/3d/3d9dba0a3645e5854abf1db7654b9c86/File/60741034919.pdfIn PDF document text
  • http://marmaraisg.com/images_upload/files/laboninutevufimutederoxi.pdfIn PDF document text
  • http://stisk.com/file/bokuvavizevisowupi.pdfIn PDF document text
  • https://sanruouvang.net/images/uploaded/file/4052883839.pdfIn PDF document text
  • https://llsindia.in/FCKeditor/file/42580330046.pdfIn PDF document text
  • http://www.combatsim.eu/wp-content/plugins/formcraft/file-upload/server/content/files/161056193acb9a---82090246607.pdfIn PDF document text
  • https://www.darrellstuckey.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a97ca51b1fb---37862428568.pdfIn PDF document text
  • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc5426b99c6---veluxekoj.pdfIn PDF document text
  • http://komputerzagrosze.pl/userfiles/file/letexusuxelejum.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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