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 http://giaoducvietnamtv.com/images/ckeditor/files/4968905170.pdf In PDF document text

  • http://toanthinh.vn/webroot/img/files/57592976559.pdfIn PDF document text
  • https://weinquartier.at/wp-content/plugins/super-forms/uploads/php/files/c14783aa2d6620e0e1d679f443c5ba38/zitikubon.pdfIn PDF document text
  • https://digireg.ru/upload/nemanaxuxe.pdfIn PDF document text
  • https://ckmusicdesign.nl/userfiles/file/tadelofevufudafozufip.pdfIn PDF document text
  • http://vds-construct.pl/userfiles/file/wijapeleluvavagaxe.pdfIn PDF document text
  • http://jcon-aps.dk/userfiles/file/nakimudisinevukox.pdfIn PDF document text
  • https://www.freshstartdigitalmarketing.com/wp-content/plugins/super-forms/uploads/php/files/08eacabd093bfcbf15061882677349dd/81327337622.pdfIn PDF document text
  • https://giolog.biz/images/bulk_images/files/91551613094.pdfIn PDF document text
  • http://imhome-listings.com/userfiles/files/45137779200.pdfIn PDF document text
  • http://envigest.cz/upload/file/88461572000.pdfIn PDF document text
  • https://iamluno.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d8d306a81c---20374605247.pdfIn PDF document text
  • http://zulassungsservice4you.de/bilder/file/63576380348.pdfIn PDF document text
  • http://roycraft.ca/userfiles/file/71871544506.pdfIn PDF document text
  • https://www.baptistenhardenberg.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607476e404140---79938839908.pdfIn PDF document text
  • https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/1c3a80c38abb7bc7f70592dfb1d32662/nagenutijixuja.pdfIn PDF document text
  • https://realimpacto.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160872b5d4eb34---80268262784.pdfIn PDF document text
  • http://chekeeh.ir/basefile/chekeehir/files/87955441391.pdfIn PDF document text
  • http://adaviestransportltd.com/userfiles/file/32145730566.pdfIn PDF document text
  • https://xn--1--8kcai1ck2bs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/18b5e2fb23069fc104314ec73544cc26/67115101010.pdfIn PDF document text
  • https://metroguards.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1612e3777d5e43---jezowekoramizini.pdfIn PDF document text
  • https://vdbergelectro.nl/wp-content/plugins/super-forms/uploads/php/files/e6875b0325dd4ba6148f41da7f0d62fb/28871627956.pdfIn PDF document text
  • http://www.majorisinvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609c5d8b818d2---25727000804.pdfIn PDF document text
  • https://www.teppiche-waschen-hamburg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bcbc44c5291---98742177045.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=class+9th+maths+ncert+solutions+chapter+10+pdfPDF link annotation
  • https://www.assessment.unibe.ch/app/webroot/js/ckfinder/userfiles/files/25857335373.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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