Malicious PDF — malware analysis report

Heuristics 7

• ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
• 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://smidgel.ru/uplcv?utm_term=adjective+start+with+y+for+a+person PDF link annotation

  • http://delve-cr.com/uploads/50767253853.pdfIn PDF document text
  • http://co-wemart.com/careeruserfiles/file/68770108147.pdfIn PDF document text
  • http://posuni.com/userfiles/file/migoro.pdfIn PDF document text
  • http://limoride.net/gallery/file/50490044922.pdfIn PDF document text
  • http://chamdure.com/DATA/files/zasuzezegamibezadusiwugik.pdfIn PDF document text
  • http://smwiarus.pl/ckfinder/userfiles/files/jazonexezaxozowivoxopuba.pdfIn PDF document text
  • https://superiorservicesandsolutionsfl.com/nbloom/fckuploads/file/senadogexigugatefugalir.pdfIn PDF document text
  • https://gangwontaxi.com/FileData/ckfinder/files/20210911_680A070EF7E556E5.pdfIn PDF document text
  • http://makaeximworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/161463abb7eee2---norat.pdfIn PDF document text
  • http://www.sintsprev-ms.org.br/ckfinder/userfiles/files/83404797318.pdfIn PDF document text
  • https://insp.biz/img/file/81974169121.pdfIn PDF document text
  • http://melly-incendie.fr/img_db/15640049341.pdfIn PDF document text
  • http://www.bewegeninarnhem.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161413b6bc239e---gokezu.pdfIn PDF document text
  • http://sensor4you.com/fckeditor/editor/filemanager/connectors/php/fckeditor/upload/202109/file/rerurijezutonipasuwexi.pdfIn PDF document text
  • https://www.lowdoc-loans.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16137e9a5b967b---kititevapik.pdfIn PDF document text
  • https://vakukh.ru/wp-content/plugins/super-forms/uploads/php/files/728f975e6c2e2fa1a7f3fd7c05000c3e/femixidemu.pdfIn PDF document text
  • http://leaguengn.com/userfiles/file///16246401711.pdfIn PDF document text
  • https://vashadvokat82.ru/wp-content/plugins/super-forms/uploads/php/files/c4b6cbc094290f11a1738d794a36fa6b/96012823363.pdfIn PDF document text
  • http://king-tableware.com/uploads/files/202109150559185781.pdfIn PDF document text
  • http://www.tecnologycenter.com/admin/uploaded/fck/file/77449949229.pdfIn PDF document text
  • http://parmalab.it/userfiles/files/7780888782.pdfIn PDF document text
  • http://cu-hinothai.com/ckfinder/userfiles/files/gufeduzigi.pdfIn PDF document text
  • http://ranch.pl/files/file/zudolaviniberoruzarufa.pdfIn PDF document text
  • http://yuanhebiotech.com/upload/files/29162751825.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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