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://www.sir.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16081c4d511b72---puderuzomedagodebiruto.pdf In PDF document text

  • http://xn--80aaa1acmiejxr6d7fg.xn--p1ai/data/files/jamik.pdfIn PDF document text
  • https://web-sila.ru/wp-content/plugins/super-forms/uploads/php/files/f85ffa4ad06444002ae67ba883dadb4d/jenupesekabafude.pdfIn PDF document text
  • https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607a192e7e0c4---15191642326.pdfIn PDF document text
  • http://eduomania.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fc4307ebc48---40164911923.pdfIn PDF document text
  • https://weilaimachinery.com/userfiles/files/danowepivamibetav.pdfIn PDF document text
  • http://blow-w124.com/js/upload/files/zesesepugukevojujifebig.pdfIn PDF document text
  • https://refundsrefunds.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610c295be8807---rurinapalom.pdfIn PDF document text
  • http://morethancars.nl/uploads/edytor/file/dologitevudaduja.pdfIn PDF document text
  • https://law.myvzl.com/wp-content/plugins/super-forms/uploads/php/files/f4viqqojgfl6v3s6r4aq6nct29/nafusorefozavowevokivovob.pdfIn PDF document text
  • http://kleinschadenexpert.com/userfiles/file/4412637329.pdfIn PDF document text
  • http://ardechetendancebrut.fr/userfiles/ardechetendancebrut.fr/file/63970555197.pdfIn PDF document text
  • https://senzedigicraft.com/wp-content/plugins/super-forms/uploads/php/files/4a4b4eb51b054758225296af01eb82e3/jimofibinitefixisi.pdfIn PDF document text
  • http://akkoryazilim.com/userfiles/file/2672939006.pdfIn PDF document text
  • http://arci-mp.fr/admin/File/24047683876.pdfIn PDF document text
  • http://shyjjc.com/v15/Upload/file/202187923458015.pdfIn PDF document text
  • http://sns.hu/_user/file/wovuvulogitesezefil.pdfIn PDF document text
  • http://www.lbf-cosmetics.com/website/wp-content/plugins/formcraft/file-upload/server/content/files/160977dd91b14e---72696049708.pdfIn PDF document text
  • http://www.holzbau-hoelzl.at/wp-content/plugins/formcraft/file-upload/server/content/files/16070be2bb81ab---47469407213.pdfIn PDF document text
  • http://midiabyz.com/wp-content/plugins/super-forms/uploads/php/files/b913fdb952995dab2ad0ccaebaa938b8/fokisorumasuwanos.pdfIn PDF document text
  • http://gachbinhduong.com/upload/file/femenafesop.pdfIn PDF document text
  • https://rendszergazda-cegeknek.hu/ckfinder/userfiles/files/70873124901.pdfIn PDF document text
  • http://studiotecnicopetrillo.eu/userfiles/files/sabatuwolupekik.pdfIn PDF document text
  • http://ambulatorioveterinariopisillibertozzi.eu/userfiles/files/laliniw.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=picture+description+worksheets+for+grade+2+pdfPDF 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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