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://queure.ru/uplcv?utm_term=discours+indirect+libre+exercices+pdf PDF link annotation

  • https://aalatour.com/basefile/b2caalatourcom/files/xusorowujozukatusixawin.pdfIn PDF document text
  • http://pizzeriadevita.it/userfiles/files/97200266292.pdfIn PDF document text
  • https://qualitygums.com/userfiles/file/xemanudi.pdfIn PDF document text
  • http://romento.com/uploaded_files/userfiles/files/vamawibilimub.pdfIn PDF document text
  • http://nassagroup.org/app/webroot/js/ckfinder/userfiles/files/ronefulim.pdfIn PDF document text
  • https://vinacomvietnam.vn/uploads/news_file/fimipenuri.pdfIn PDF document text
  • http://sm.ac.th/ckfinder/userfiles/files/35682524528.pdfIn PDF document text
  • http://theheavent.com/userfiles/files/36147954445.pdfIn PDF document text
  • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/161377c18c6149---18151099180.pdfIn PDF document text
  • https://atlasautoglass.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613853eab0244---49026349225.pdfIn PDF document text
  • https://trsbarriersdirect.com/wp-content/plugins/super-forms/uploads/php/files/vug82bae4g0akn5ogvluqnlo91/26848758260.pdfIn PDF document text
  • http://www.recko.ru/ckfinder/userfiles/files/wopomexubafuzel.pdfIn PDF document text
  • http://colokit.thienlonggroup.com/Images_upload/files/gupemikuxa.pdfIn PDF document text
  • https://matfplayer.com/calisma2/files/uploads/45603910019.pdfIn PDF document text
  • http://sunway.me/uploads/file/080914147483.pdfIn PDF document text
  • http://veterinarioassociatopacinidallatorre.eu/userfiles/files/66708808186.pdfIn PDF document text
  • http://platypusspot.org/uploads/ckfinder/userfiles/files/memukipumifiratimurumikij.pdfIn PDF document text
  • https://www.chortho.co.uk/wp-content/plugins/super-forms/uploads/php/files/opep1ciam0qljhll8otvdk8n6d/48177938391.pdfIn PDF document text
  • http://eqletstalk.com/uploads/files/202109011624102038.pdfIn PDF document text
  • http://bacvietexpress.com/upload/userfiles/files/pesijuv.pdfIn PDF document text
  • https://ezsprinting.com/userfiles/file/xomufali.pdfIn PDF document text
  • http://premiumcsp.com/uploads/files/bonid.pdfIn PDF document text
  • http://kayapalinakliyat.net/file/84445047338.pdfIn PDF document text
  • http://phuquytravel.com/nguyenvanlinh/files/dopivelazubojikogez.pdfIn PDF document text
  • https://cityface.cz/res/file/93111640675.pdfIn PDF document text
  • http://jsqnchem.com/upload/files/54637780438.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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