Malicious PDF — malware analysis report

Heuristics 6

• 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 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://thieumaunao.vn/workspace/develop/uploads/ck_upload/files/31051590045.pdf In PDF document text

  • http://sgyscom.com/upload_fck/file/2021-7-5/20210705181635118897.pdfIn PDF document text
  • https://stollerco.com/testingsites/advantage_aviation/assets/media/file/70138066516.pdfIn PDF document text
  • https://fastcomputer.vn/wp-content/plugins/super-forms/uploads/php/files/4f669cf9cc26dc769ae448ca9a39799c/ruxilutumonikawumon.pdfIn PDF document text
  • https://www.cr-sdc.org/wp-content/plugins/super-forms/uploads/php/files/48360d89d5ae8ea9db04c6ef08f41b76/sinilelomadebu.pdfIn PDF document text
  • http://inncredel.com/uploads/57797355250.pdfIn PDF document text
  • https://noks.cz/wp-content/plugins/formcraft/file-upload/server/content/files/160c74f952b799---tujorikunomemisifagod.pdfIn PDF document text
  • http://dirabrealtors.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099c0c500998---jiwivugix.pdfIn PDF document text
  • https://baohohoanglong.com/userfiles/file/51915496717.pdfIn PDF document text
  • http://lex-ter.ru/admin/ckfinder/userfiles/files/5545702122.pdfIn PDF document text
  • http://mayinluatudong.com/uploads/userfiles/file/sabivonadatoxes.pdfIn PDF document text
  • https://bustotoronto.com/userfiles/file/48334080296.pdfIn PDF document text
  • https://travolution.travel/wp-content/plugins/super-forms/uploads/php/files/e2c99a99eacdd90a9c2e04db2f2d9c31/sebusexufi.pdfIn PDF document text
  • http://szerecsen.hu/editor_up/podoboketekezebanuk.pdfIn PDF document text
  • http://www.marsagri.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c2978281147---soligajonanidor.pdfIn PDF document text
  • http://sola-brothers.com/userfiles/file/rasegibe.pdfIn PDF document text
  • http://duquenne-moteurs.fr/webroot/upload/files/lirarimupojewer.pdfIn PDF document text
  • https://ag-concept.ru/wp-content/plugins/super-forms/uploads/php/files/c6d4a5ecb117dab8422ce17bb379402f/degafuzomoguriweresenude.pdfIn PDF document text
  • http://dream-mebel.com/pic/file/70121551540.pdfIn PDF document text
  • http://dieterheich.de/images/uploads/file/36250547734.pdfIn PDF document text
  • https://www.finestkindcharter.com/wp-content/plugins/formcraft/file-upload/server/content/files/160906909aded8---jerazirukovalopagaz.pdfIn PDF document text
  • http://geology.ie/wp-content/plugins/formcraft/file-upload/server/content/files/160853fff46b1f---52708725964.pdfIn PDF document text
  • http://studio-orlandini.com/userfiles/files/55617532193.pdfIn PDF document text
  • http://walker-doss.com/clients/4/45/450b4a4af5ff3f13851793278d9c7ef8/File/zefevavosurebivukubep.pdfIn PDF document text
  • http://theettiaresottawa.org/clients/e/e8/e8f54e69a7463df9fd0adff13cd8e90f/File/56584288461.pdfIn PDF document text
  • http://phamtrangia.com/upload/files/84207882669.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=microsphere+review+article+pdfPDF link annotation
  • 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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