Malicious PDF — malware analysis report

Heuristics 9

• 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.
• Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
  Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
• 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=walking+dead+season+7+download+utorrent PDF link annotation

  • http://shosholoza.de/file/83700580787.pdfIn PDF document text
  • https://investincarpathians.eu/app/webroot/media/files/72985799459.pdfIn PDF document text
  • http://coimbra.hu/uploads/ckfinder/userfiles/files/tanavebemam.pdfIn PDF document text
  • https://mariapolis.net/ckfinder/userfiles/files/90893797194.pdfIn PDF document text
  • https://cullinanconstruction.com/wp-content/plugins/super-forms/uploads/php/files/k7tj6pjkosn6piofr93jdduar2/fatenepinegavagutil.pdfIn PDF document text
  • http://lammensfilip.be/uploads/files/78007824370.pdfIn PDF document text
  • http://www.corazondelsol.es/ckfinder/userfiles/files/resaguzegu.pdfIn PDF document text
  • http://xn----7sbicwad4afgcgd5aph7d5e.xn--p1ai/ckfinder/userfiles/files/84533740157.pdfIn PDF document text
  • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/09b07c40b13490add2bf8def27b86887/monod.pdfIn PDF document text
  • http://0851gay.org/userfiles/202109file/2021090515443470554.pdfIn PDF document text
  • https://santchavarabed.in/ckfinder/userfiles/files/mikemozavexawaj.pdfIn PDF document text
  • https://www.toptalentusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/16142a94771bf3---78034140484.pdfIn PDF document text
  • https://maydangson.com/vietkiendo/upload/file/wugufunitoja.pdfIn PDF document text
  • http://pazzo.jp/js/upload/files/52276002199.pdfIn PDF document text
  • http://ambulatorioveterinariovianello.eu/userfiles/files/73559203621.pdfIn PDF document text
  • https://officialbacknumber.org/editor_up/japovefarovagifewozupuz.pdfIn PDF document text
  • https://sergeca.com.ve/ckfinder/userfiles/files/79654505257.pdfIn PDF document text
  • http://yeditepegumruk.com/userfiles/vuzivoturemivulawolafim.pdfIn PDF document text
  • http://www.addvanceo.info/userfiles/files/zezimujatufomaz.pdfIn PDF document text
  • http://bndweb.nl/upload/files/76290986503.pdfIn PDF document text
  • https://dailyhondaotomientay.com/upload/files/zekumifipamiweweke.pdfIn PDF document text
  • https://m-isc.com/userfiles/file/1752906281.pdfIn PDF document text
  • http://www.buildonhope.org/file/wimawezotedir.pdfIn PDF document text
  • http://tubietelbar.hu/uploadfile/vuferusonujupanukod.pdfIn PDF document text
  • http://sinsg.com/files/fckeditor/file/28253116835.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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