Malicious PDF — malware analysis report

Heuristics 9

• 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 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.
• QR-code redirect lure medium SE_QR_LURE
  Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
• 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.
• 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://brunoamaranti.it/wp-content/plugins/super-forms/uploads/php/files/g2shg92ps8ujlutrns588oeus3/48701047696.pdf In PDF document text

  • http://goldendoodlesofthesierranevadas.com/userfiles/file/bimuveduvonikiragotirigu.pdfIn PDF document text
  • http://msmzizkov.cz/data/dokumenty/putaj.pdfIn PDF document text
  • https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1613e637f43268---69397171402.pdfIn PDF document text
  • http://yishiweb.com/upfiles/files/20210913_230444.pdfIn PDF document text
  • http://idolyokocho.com/js/ckfinder/userfiles/files/37447655823.pdfIn PDF document text
  • http://agisinfo.ru/uploads/content/files/33796563634.pdfIn PDF document text
  • http://kasaitogo.com/uploads/files/mutojikumusininekana.pdfIn PDF document text
  • http://goksirkrupskimlyn.pl/img/upload/files/97467361349.pdfIn PDF document text
  • http://patroha.hu/file/vivapusenitamizenuwuti.pdfIn PDF document text
  • http://am-assets.com/aom/magnolia/userfiles/file/4702001512.pdfIn PDF document text
  • https://www.oasipizza.it/wp-content/plugins/formcraft/file-upload/server/content/files/161406a0d69b7a---76249561723.pdfIn PDF document text
  • http://khonggianmang.com/upload/files/95049208965.pdfIn PDF document text
  • http://timatey.kz/wp-content/plugins/super-forms/uploads/php/files/l7o9m5gdh88smbvbloso4feq53/13170170530.pdfIn PDF document text
  • https://www.toptalentusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613730c0a6a2e---27224479681.pdfIn PDF document text
  • https://proia.bg/userfiles/file/musofumawelinijeba.pdfIn PDF document text
  • https://cr2tek.com/userfiles/Proj_Name/files/mafis.pdfIn PDF document text
  • http://lngpetro.com/userfiles/file/zepogoxadezozalenixuxo.pdfIn PDF document text
  • https://trade.inter-ural.ru/ckfinder/userfiles/files/85686164538.pdfIn PDF document text
  • https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/161356ca028a8e---zibukerobewawezubufobeniz.pdfIn PDF document text
  • http://linuxnewyork.com/draft/media/gaxodado.pdfIn PDF document text
  • http://hankyunget.net/userData/board/file/60014064797.pdfIn PDF document text
  • http://lotusromeo.fr/app/webroot/files/userfiles/files/savitiwibosupolilorizut.pdfIn PDF document text
  • http://yachtales.net/admin/userfiles/files/zebavozak.pdfIn PDF document text
  • http://viaterrestre.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613dde9be54c3---94900464960.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=how+to+scan+a+qr+code+screenshot+on+iphonePDF 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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