Malicious PDF — malware analysis report

Heuristics 7

• 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://www.mclarenpress.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079d07f0f4e4---50456166476.pdf In PDF document text

  • http://cuatudongsaigon.vn/uploads/files/pezaxewavapigesokagedudat.pdfIn PDF document text
  • https://www.denisonlandscaping.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d41d8aaa3b---lajogufan.pdfIn PDF document text
  • http://feach.ie/images/uploads/file/lujolowape.pdfIn PDF document text
  • http://xn--80aadq3ae7aa5k.xn--p1ai/upload/file/jisoxadawuridivexewirogo.pdfIn PDF document text
  • http://alnoorcity.com/userfiles/file/69087352040.pdfIn PDF document text
  • https://www.abaco-engineering.it/wp-content/plugins/formcraft/file-upload/server/content/files/16086566631f30---96792429544.pdfIn PDF document text
  • https://www.truesdalepainting.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ace2a3d8a7---sananiveturerawoxiku.pdfIn PDF document text
  • http://kojeneckezbozi.eu/userfiles/file/38967490122.pdfIn PDF document text
  • https://www.beadvised.co.uk/wp-content/plugins/super-forms/uploads/php/files/f75af5193ebe436d32840376c41eeccb/80671814505.pdfIn PDF document text
  • http://tsutae-f.com/js/upload/files/37234593778.pdfIn PDF document text
  • https://aliencosmicexpo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085d557d3915---nivapisamezukusaxujoxul.pdfIn PDF document text
  • https://autoschiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606d0dd85573f---39024298681.pdfIn PDF document text
  • https://nutstudio.it/userfiles/file/57788056302.pdfIn PDF document text
  • https://realwebguys.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b434844bd1e---jebodipedipavetifod.pdfIn PDF document text
  • https://gauravkankariya.com/wp-content/plugins/super-forms/uploads/php/files/qg4gcokbg7oojgpuiuco1eree2/xanuxak.pdfIn PDF document text
  • http://www.argentum.com/wp-content/plugins/super-forms/uploads/php/files/vecfvaemb5egdvgtaedui7t335/33183791801.pdfIn PDF document text
  • http://hotelbelleepoque.bg/userfiles/file/jadinuzimafapilunumakuw.pdfIn PDF document text
  • http://galantemontagnana.it/ckfinder/userfiles/files/22565515118.pdfIn PDF document text
  • http://viaterrestre.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16082779a633c6---81811622661.pdfIn PDF document text
  • https://collegemahan.ir/basefile/collegemahanir/files/28356891504.pdfIn PDF document text
  • http://harissarantis.com/userfiles/files/87356676016.pdfIn PDF document text
  • https://oiweld.com/wp-content/plugins/super-forms/uploads/php/files/77cf55717f09eadac1a5412214208671/39910730656.pdfIn PDF document text
  • https://sidexsideaudio.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b142be6a95b---gidot.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=rrb+ntpc+questions+and+answers+pdf+2021PDF 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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