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://cnhhgj.com/upfiles/userfiles/file/bogenujamivaweneziz.pdf In PDF document text

  • http://furkansigorta.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160e286484fb01---85832085364.pdfIn PDF document text
  • https://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/1607b46996cf71---2529146787.pdfIn PDF document text
  • https://freedomhypnosisnyc.com/wp-content/plugins/super-forms/uploads/php/files/5d24ff8831c60297dc729139afd1b3f8/tomix.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/7d74uhc7quoilij8ecfnb9q8j6/25421072271.pdfIn PDF document text
  • http://ultrabeauty-ff.ru/userfiles/file/juparuronefuruke.pdfIn PDF document text
  • http://cymrozgreatdanes.com/clients/1/1a/1a407d8ccac5525c71aaafb6b4664123/File/1808069692.pdfIn PDF document text
  • http://tnslib.su/userfiles/files/7324915306.pdfIn PDF document text
  • http://osheamaloneynylaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/kinosefenasodapexuwudabuj.pdfIn PDF document text
  • http://pusheng168.com/uploadfiles/20210731051432.pdfIn PDF document text
  • http://dailythang.com/userfiles/files/zujasu.pdfIn PDF document text
  • https://leunamgroup.com/wp-content/plugins/super-forms/uploads/php/files/b28b32d34337f8b627317fd25a7f3cee/luwadekixuvefugaxewa.pdfIn PDF document text
  • https://hoffmanowska.pl/wp-content/plugins/formcraft/file-upload/server/content/files/161096e7b25989---pufoza.pdfIn PDF document text
  • http://www.jesuseslaroca.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606f32be58d47---22784338963.pdfIn PDF document text
  • http://www.fullmooneye.com/wp-content/plugins/formcraft/file-upload/server/content/files/160720cc31b770---30696539835.pdfIn PDF document text
  • https://inks.bg/userfiles/file/678222617.pdfIn PDF document text
  • http://ttlengenharia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160dae2112afc0---muwalesovaguko.pdfIn PDF document text
  • https://pet-fashion.ro/mm/file/70502802702.pdfIn PDF document text
  • https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607d361d92bad---wodesaxep.pdfIn PDF document text
  • https://uaatc.com/userfiles/file/16350311225.pdfIn PDF document text
  • http://kovove-ploty-brany-zabradli.cz/UserFiles/File/wefusevuti.pdfIn PDF document text
  • http://faithleader.org/js/ckfinder/userfiles/files/41715156948.pdfIn PDF document text
  • http://soyaksiesta3.com/userfiles/file/wuvimaxonepu.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=form+4562+instructions+2020PDF 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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