Malicious PDF — malware analysis report

Heuristics 8

• 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.
• 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://htfcompact.com/wp-content/plugins/super-forms/uploads/php/files/2d250d2e4518a080783bc869fe7d0ce6/18053689448.pdf In PDF document text

  • http://turar-mussin.com/userfiles/File/23630554037.pdfIn PDF document text
  • https://bravo-hk.com/userfiles/file/xowusuji.pdfIn PDF document text
  • http://www.lavalledesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c2f6e43a7fd---xozazofuluzalubafesada.pdfIn PDF document text
  • http://bazatalty.pl/wp-content/plugins/super-forms/uploads/php/files/71cb6b0d89212f0cf7b1d2c0844e5960/47115202981.pdfIn PDF document text
  • http://vanharteyoga.nl/uploads/files/9320992408.pdfIn PDF document text
  • http://allseasonsart.com/uploads/fck_uploads/file/19334150089.pdfIn PDF document text
  • https://shiphangnhanh.net/uploads/image/files/tupexotuladofizovepukubul.pdfIn PDF document text
  • http://fusiongrup.ro/userfiles/file/56169693250.pdfIn PDF document text
  • http://ambulatorioveterinarioilghirlandaio.it/userfiles/files/96757791668.pdfIn PDF document text
  • http://win-sonic.com/kida2018/ck_imgs/files/xixub.pdfIn PDF document text
  • http://precisionsurgicalworks.com/alpha/ckfinder/userfiles/files/61586913018.pdfIn PDF document text
  • http://abwrichmond.com/uploads/files/46300489853.pdfIn PDF document text
  • https://cruiseship.cruises/wp-content/plugins/super-forms/uploads/php/files/vtl92iqaaoh6vdhua66n3er3fh/31343625613.pdfIn PDF document text
  • https://bccphil.paramedix.biz/uploadfiles/file/tosilagig.pdfIn PDF document text
  • http://agcslohian.com/userfiles/file/12102886775.pdfIn PDF document text
  • http://www.danvillern.com/wp-content/plugins/super-forms/uploads/php/files/q1icjlua522rhghtfqf0ouah65/11570829682.pdfIn PDF document text
  • https://yucekalipmakina.com/tsrm1/img/userfiles/file/83234289985.pdfIn PDF document text
  • http://tanabuauto.com/js/upload/files/lotavised.pdfIn PDF document text
  • http://uniroll.pl/user_images/file/wodarej.pdfIn PDF document text
  • https://aslimitada.com/userfiles/file/97993507651.pdfIn PDF document text
  • https://freedomtampons.com/wp-content/plugins/super-forms/uploads/php/files/2945ccdef47dcb2fdc3aa1d81d428955/polad.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=verb+worksheet+4th+gradePDF 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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