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 http://posicert.com/upload_fck/file/2021-9-17/20210917081209220108.pdf In PDF document text

  • https://mikepromedia.com/wp-content/plugins/super-forms/uploads/php/files/006f6041adcc6762969b38baa42edf22/86452575960.pdfIn PDF document text
  • https://office-agglo-larochelle.fr/userfiles/file/kerugamijevifokiruju.pdfIn PDF document text
  • https://www.yoursurveysurveyors.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1613fd865ea7bd---84141415996.pdfIn PDF document text
  • https://polinagerz.ru/wp-content/plugins/super-forms/uploads/php/files/05ot6f94q5dtkcimr517jg9ava/43982341436.pdfIn PDF document text
  • https://lifeteacher.tw/uploads/files/202109010314533854.pdfIn PDF document text
  • http://chapaconoticias.com/assets/ckfinder/core/connector/php/uploads/files/tafera.pdfIn PDF document text
  • http://iburgisidimarsala.eu/userfiles/files/kigesifepoxazujewono.pdfIn PDF document text
  • http://agisinfo.ru/uploads/content/files/6123477047.pdfIn PDF document text
  • http://novichiha.ru/pic/file/62132927803.pdfIn PDF document text
  • http://sz-nuoyi.com/Upload/file/2021090600574698476.pdfIn PDF document text
  • https://cfi-registration.amyhalter.com/buzzboxgift/img/userfiles/files/fumiwetediro.pdfIn PDF document text
  • http://all-premium.com/user_file/files/tusefugujiponizuragote.pdfIn PDF document text
  • https://testgit.begurholidays.com/uploads/userfiles/files/27676111113.pdfIn PDF document text
  • http://franzoesischebulldoggen.eu/userfiles/file/58887186232.pdfIn PDF document text
  • https://hotelristorantenovecento.it/wp-content/plugins/super-forms/uploads/php/files/d1f5463cdd2e4efbe5497a2ab3722245/39621406769.pdfIn PDF document text
  • http://autofactory-jin.com/js/upload/files/21538592449.pdfIn PDF document text
  • https://dazhonghua1688.com/ckfinder/userfiles/files/bamakomovebupunabifi.pdfIn PDF document text
  • https://zazilha.com.mx/wp-content/plugins/super-forms/uploads/php/files/c7913d3db45a9053fb0f1ea7410911dc/44621858281.pdfIn PDF document text
  • http://sp3siemianowice.pl/userFiles/files/88310009342.pdfIn PDF document text
  • http://metall-press.ru/files/jubotasilexidumapaf.pdfIn PDF document text
  • https://irisapp.cn/uploadfiles/fckeditor/20210908/file/16310348868793.pdfIn PDF document text
  • https://warsztatgdynia.pl/app/webroot/media/files/78680619134.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=how+to+block+someone+from+texting+you+on+androidPDF 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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