Malicious PDF — malware analysis report

Heuristics 8

• 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 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 http://bettynblue.com/upload/fck_img/20210908/file/zufiweperexavelu.pdf In PDF document text

  • http://gayaarchi.com/userfiles/file/20210906140235.pdfIn PDF document text
  • http://adoriantarla.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16136fcd3024d7---momajexerad.pdfIn PDF document text
  • http://massageindex.nl/images/uploads/15838537140.pdfIn PDF document text
  • https://holocaustresearch.pl/nowy/photo/file/zenurogarisufimenifibuwuz.pdfIn PDF document text
  • http://titibbs.xyz/js/ckfinder/userfiles/files/bamojufunanit.pdfIn PDF document text
  • https://elicopter-de-inchiriat.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16134095bc2961---92383814985.pdfIn PDF document text
  • http://carraracucinecomponibilitrapani.it/userfiles/files/96981097146.pdfIn PDF document text
  • http://orderbestwings.com/uploads/files/sawiwonubetawabinawivari.pdfIn PDF document text
  • https://12tiga.com/contents/files/19124016669.pdfIn PDF document text
  • https://gruntbudowa.pl/files/file/62469071293.pdfIn PDF document text
  • http://haki.vn/uploads/files/34319872657.pdfIn PDF document text
  • http://dsfly.com/uploads/files/32083045731.pdfIn PDF document text
  • https://kamarkosong.com/contents/files/nowiwudus.pdfIn PDF document text
  • https://hahapediatric.com/uploads/files/202109040316373062.pdfIn PDF document text
  • https://confidence-ist.com/ckfinder/userfiles/files/giziduparivasibigezegila.pdfIn PDF document text
  • http://umartravel.com/files/42298441102.pdfIn PDF document text
  • https://kindliving.org/wp-content/plugins/super-forms/uploads/php/files/tmp/14178513320.pdfIn PDF document text
  • http://bettynblue.com/upload/fck_img/20210902/file/51816802706.pdfIn PDF document text
  • https://agrocare.ro/ckfinder/userfiles/files/89177024117.pdfIn PDF document text
  • http://archidaldegan.eu/userfiles/files/ravikewegilunutipopubi.pdfIn PDF document text
  • https://telorgabus.com/contents/files/revalavumefinabudewuli.pdfIn PDF document text
  • http://brunagabriele.it/userfiles/files/vegozuju.pdfIn PDF document text
  • http://euroteam.vn/ckfinder/userfiles/files/84311018228.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=ninja+kitty+unblockedPDF 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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