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 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.
• QR-code redirect lure medium SE_QR_LURE
  Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
• 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://etest.vn/app/webroot/uploads/files/51963380340.pdf In PDF document text

  • http://asijskepotraviny.cz/files/file/78766153775.pdfIn PDF document text
  • https://ever-progress.dacola.com/upload/files/11881256823.pdfIn PDF document text
  • https://atx-stroy.ru/wp-content/plugins/super-forms/uploads/php/files/2506e73704337aaafb8401f776cde9a3/jowuwopidakivas.pdfIn PDF document text
  • https://alpinashop.bg/files/26020616964.pdfIn PDF document text
  • http://thechitay.com/uploads/userfiles/file/nanulajifawoluzubagidaxi.pdfIn PDF document text
  • https://www.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/161300086579db---mefikozirivagewedotati.pdfIn PDF document text
  • https://52fantasies.com/home/holly/public_html/ckfinder/userfiles/files/80896218247.pdfIn PDF document text
  • https://tcufroghouses.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136502c24ca6---45826702006.pdfIn PDF document text
  • http://studiofapas.it/userfiles/files/62144841948.pdfIn PDF document text
  • http://thunderstar.cn/userfiles/file/20210903031459909943999.pdfIn PDF document text
  • https://stoneappeal.in/FCKeditor/file/nadenosefimonetomugota.pdfIn PDF document text
  • https://www.saenger-ohg.de/wp-content/plugins/formcraft/file-upload/server/content/files/161457e6fd43c5---55446534100.pdfIn PDF document text
  • https://cambodiadriverservice.com/userfiles/file/jugimarigewidan.pdfIn PDF document text
  • http://tubietelbar.hu/uploadfile/55350252309.pdfIn PDF document text
  • http://kp-technik.cz/ckfinder/userfiles/files/bubiwuwur.pdfIn PDF document text
  • http://interel-rus.ru/test/sites/default/files/file/zusoj.pdfIn PDF document text
  • https://reitinguok.lt/userfiles/file/wewidap.pdfIn PDF document text
  • http://bukharaalpharetta.com/sites/default/files/file/98768983150.pdfIn PDF document text
  • http://namngonviet.vn/user-/files/46397233526.pdfIn PDF document text
  • http://xn--b1adbbbaeqjtsflbfms0e.xn--p1ai/pict/file/lepewitojaro.pdfIn PDF document text
  • https://asigurareingermania.ro/wp-content/plugins/super-forms/uploads/php/files/1veurrlen9qgdju64pmfte2gdo/lajevumisikokiladafamuvon.pdfIn PDF document text
  • https://taucaotoccatba.vn/images/news/files/32748130525.pdfIn PDF document text
  • http://www.kreasoft.mx/wp-content/plugins/formcraft/file-upload/server/content/files/1613f3deaadfb6---mivisuwuvemagon.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=qr+code+redmi+note+8+proPDF 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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