Malicious PDF — malware analysis report

Heuristics 7

• 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 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://crysiq.ru/uplcv?utm_term=from+fermi+dirac+statistics+ni PDF link annotation

  • http://tydafa.com/dafa/uploadfiles/20210902200150.pdfIn PDF document text
  • https://t4g.nasscomfoundation.org/wp-content/plugins/super-forms/uploads/php/files/bbdhskr1shbs5h6msflhs0hqh5/gamawofo.pdfIn PDF document text
  • http://timebank.ru/sites/default/files/photos/pagefile/53526858469.pdfIn PDF document text
  • http://lnaixi.com/userfiles/file/20210903092834_1514819329.pdfIn PDF document text
  • http://prestizhstroycompany.ru/SITE/files/editor/file/81706207783.pdfIn PDF document text
  • http://artdealer.vn/upload/fckimagesfile/50eb675ad8dd888e805c8b6b9cd59baa.pdfIn PDF document text
  • http://techsystem.gr/data/uploads/ckeditor/files/gokujuvupowopipiku.pdfIn PDF document text
  • http://texmet.pl/userimages/file/pidebiver.pdfIn PDF document text
  • http://noticiascgnews.com.br/ckfinder/userfiles/files/jesutedogosubovolelodaz.pdfIn PDF document text
  • https://kopari.hu/files/file/13108880520.pdfIn PDF document text
  • https://www.cylinder96.ru/admin/ckfinder/userfiles/files/rolupiketigekemi.pdfIn PDF document text
  • https://sarenpinler.com/calisma2/files/uploads/tebipufaxefab.pdfIn PDF document text
  • http://yuhenganquan.com/userfiles/file/20210925081650_1451369180.pdfIn PDF document text
  • https://motelandratecuci.ro/userfiles/file/47821794534.pdfIn PDF document text
  • https://jackyrouxmethode.com/userfiles/file/sotapawe.pdfIn PDF document text
  • http://noospc.ru/SITE/files/editor/file/javemi.pdfIn PDF document text
  • https://justforjetscatering.com/userfiles/image/files/58937390895.pdfIn PDF document text
  • https://onecre.com/images/content/files/30421077289.pdfIn PDF document text
  • https://nikolsbeauty.com/webroot/f/uploads/file/39110339084.pdfIn PDF document text
  • http://brothersaluminium.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/1613361e1457db---zedakesuto.pdfIn PDF document text
  • http://pazzo.jp/js/upload/files/21634215287.pdfIn PDF document text
  • http://www.consorcio.edu.pe/wp-content/plugins/formcraft/file-upload/server/content/files/161489f125841f---latorap.pdfIn PDF document text
  • http://elitsatodorova.com/uploadfiles/file/fadusunewakuniz.pdfIn PDF document text
  • https://maytinhdalat.vn/images/uploads/files/64445930456.pdfIn PDF document text
  • http://newdimension.su/userfiles/file/lavunubuseb.pdfIn PDF document text
  • https://polinagerz.ru/wp-content/plugins/super-forms/uploads/php/files/0fo1vaeffo4ev1o9as45i26f65/69489004092.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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