Malicious PDF — malware analysis report

Heuristics 6

• 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 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 http://namngonviet.vn/user-/files/38096020238.pdf In PDF document text

  • https://www.citysecurity.org.uk/wp-content/plugins/super-forms/uploads/php/files/6qtcf1ejnhv9fhv5a2gikus6g9/97724115814.pdfIn PDF document text
  • https://sumangold.net.vn/wp-content/plugins/super-forms/uploads/php/files/0p03e2rkj70ehclrp44h30mj84/bisopimox.pdfIn PDF document text
  • http://artmetinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e02a5e3605---49287166064.pdfIn PDF document text
  • http://czpohledavky.cz/userfiles/files/91718810796.pdfIn PDF document text
  • http://terezszilvia.com/images/uploaded/file/24990121386.pdfIn PDF document text
  • https://www.areatransfers.com/wp-content/plugins/formcraft/file-upload/server/content/files/161196edc0f99d---saxizabutoti.pdfIn PDF document text
  • https://vandolderskb.com/images/usr/96578441239.pdfIn PDF document text
  • http://daejonggyoyc.com/userfiles/file/20210831184813.pdfIn PDF document text
  • http://evpltravel.com/xv_image/file/83196630688.pdfIn PDF document text
  • http://studioguidobarbieri.it/userfiles/files/xabir.pdfIn PDF document text
  • https://fastcomputer.vn/wp-content/plugins/super-forms/uploads/php/files/018fd7545479b8e5d21294b2271de218/74583640453.pdfIn PDF document text
  • http://younewstoday.com/task/userimages/file/532086353.pdfIn PDF document text
  • https://www.basur-tedavisi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084b6f53a2f8---baxijo.pdfIn PDF document text
  • http://markone-tools.com/upload/files/72502836696.pdfIn PDF document text
  • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/hq2sr3os31lj1qggjcmfk19053/92354913488.pdfIn PDF document text
  • https://abugfreemind.com/userfiles/file/modud.pdfIn PDF document text
  • http://aquatrustfina.com/userfiles/file/kesupur.pdfIn PDF document text
  • https://ballestermultiservicios.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b7b22c7c2ae---tuwedetegejog.pdfIn PDF document text
  • http://bamila.vn/luutru/files/gufej.pdfIn PDF document text
  • http://www.gcsystem.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1609d5c3422f55---kilapif.pdfIn PDF document text
  • https://www.pferde-fuer-unsere-kinder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606f433613445---fidepo.pdfIn PDF document text
  • https://hoffmanowska.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1608bb596634a6---99079636491.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=reducing+a+pdf+filePDF 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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