Malicious PDF — malware analysis report

Heuristics 7

• 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.
• 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://smidgel.ru/uplcv?utm_term=how+2+get+free+v+bucks PDF link annotation

  • http://brno-skoleniridicu.cz/ckfinder/userfiles/files/gasazaga.pdfIn PDF document text
  • http://lor-rostov.su/userfiles/files/besotijenubule.pdfIn PDF document text
  • https://astdubai.co/userfiles/files/xepufofixosene.pdfIn PDF document text
  • http://botaierpharm.com/upload/files/29359224683.pdfIn PDF document text
  • http://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/1613f4c953ab77---68231021691.pdfIn PDF document text
  • https://fallsplat.se/bildbank/file/4772772685.pdfIn PDF document text
  • https://kaptenhoki.org/contents/files/82235474537.pdfIn PDF document text
  • https://shining4u.com/wp-content/plugins/super-forms/uploads/php/files/d8739458c7d642e6ab5742e27e368d93/96702017928.pdfIn PDF document text
  • https://rtvpuls.com/ckfinder/userfiles/files/8310271443.pdfIn PDF document text
  • http://asremajazi.com/uploads/files/voxeju.pdfIn PDF document text
  • https://uaqbakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613987abc6fdd---90149783333.pdfIn PDF document text
  • https://perfecthospital.org/ckfinder/userfiles/files/6239590554.pdfIn PDF document text
  • https://www.prshots.com/ckfinder/userfiles/files/xafewurate.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/dhe5je8gqn7of6nv9dm1m2ikc3/20304090496.pdfIn PDF document text
  • http://joyerialaplaza.com/ckfinder/userfiles/files/75430969596.pdfIn PDF document text
  • http://www.39koratmachinery.com/file_upload/files/86821094746.pdfIn PDF document text
  • http://synowka.pl/galeria/file/zovuforog.pdfIn PDF document text
  • http://ugrctrani.it/userfiles/files/sevoje.pdfIn PDF document text
  • https://adeptos.clevercloud.pt/images/items/files/purufoberu.pdfIn PDF document text
  • http://autoklej.pl/app/webroot/media/files/66179368564.pdfIn PDF document text
  • http://engroupe.ca/aym_image/files/52242320795.pdfIn PDF document text
  • https://jungleflightchiangmai.jungle-flight.com/Uploads/files/79454482321.pdfIn PDF document text
  • http://gmt-tw.com/app/webroot/userfiles/files/nikelareraxidamigepusa.pdfIn PDF document text
  • http://yuanjen.com/ckfinder/userfiles/files/83401071943.pdfIn PDF document text
  • http://pro-elec.ru/ckfinder/userfiles/files/40015800226.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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