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
• LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
  Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
• 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=nys+dtf+ct+payment PDF link annotation

  • https://pinkrali.com/calisma2/files/uploads/23378082961.pdfIn PDF document text
  • http://0851gay.org/userfiles/202109file/2021090515443470554.pdfIn PDF document text
  • http://kayapalinakliyat.net/file/53229204211.pdfIn PDF document text
  • https://siphouse96.com/wp-content/plugins/super-forms/uploads/php/files/f8785c0b13c1be735cf25778ca4e07ca/71454983186.pdfIn PDF document text
  • http://joyandwowbook.com/upload/file/92459706056.pdfIn PDF document text
  • http://villaturri.it/wp-content/plugins/formcraft/file-upload/server/content/files/1614e77755c429---9678381319.pdfIn PDF document text
  • http://mebelhotel.ru/userfiles/files/5598846905.pdfIn PDF document text
  • http://www.hro.ait.ac.th/js/ckfinder/userfiles/files/10432211000.pdfIn PDF document text
  • https://rajnnuhiddje.se/userfiles/file/selosonikexigovakiluwif.pdfIn PDF document text
  • https://aawyx.com/sites/default/imageuser/file/69342997645.pdfIn PDF document text
  • https://leavereview.com/customerinterview/ckfinder/userfiles/files/66863529049.pdfIn PDF document text
  • http://sushifactoryazusa.com/uploads/files/vokuwizitagolexunexub.pdfIn PDF document text
  • http://www.masozilina.sk/ckfinder/userfiles/files/radaruxumokafowokitos.pdfIn PDF document text
  • https://preciseenergygroup.com/media/xivubuwevakoxikuxon.pdfIn PDF document text
  • http://charmingcurls.se/upload/file/juvurivowovusogadakofuz.pdfIn PDF document text
  • https://eagle-aviation.com/userfiles/files/83157484947.pdfIn PDF document text
  • http://pokebarslo.com/uploads/files/zifedaja.pdfIn macro / runtime command snippet
  • https://www.beadvised.co.uk/wp-content/plugins/super-forms/uploads/php/files/2a07be6ecb3adf8014db39d5a32a66d1/7223147512.pdfIn PDF document text
  • http://cedresarquitectura.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139cc0e56942---sedobawafogix.pdfIn PDF document text
  • http://jtg-antracyt.pl/files/file/17787680327.pdfIn PDF document text
  • https://cochleartudaskozpont.hu/files/56456325956.pdfIn PDF document text
  • http://www.tomasjelinek.com/img/pub/file/pomuribuk.pdfIn PDF document text
  • http://roleco.pl/data/aktualnosci_imgs/file/nuruvebof.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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