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 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 http://phanphoiongnhuahoasen.vn/upload/files/26643725951.pdf In PDF document text

  • https://soswzgierz.pl/web/uploads/files/warolit.pdfIn PDF document text
  • http://restokrat.info/userfiles/file/47259106435.pdfIn PDF document text
  • http://nhatrangpalace.net/app/webroot/upload/files/52252676856.pdfIn PDF document text
  • http://beiwendq.com/userfiles/file/xiratagulesamixidunisetu.pdfIn PDF document text
  • https://dammesliepas.lv/ckfinder/userfiles/files/lutatutibuwolewiwoj.pdfIn PDF document text
  • http://kqcme.yiaiwang.com.cn/upload/files/99379620998.pdfIn PDF document text
  • https://www.carlosfunes.es/wp-content/plugins/formcraft/file-upload/server/content/files/161346c137a739---92266151072.pdfIn PDF document text
  • https://cbolean.com/wp-content/plugins/super-forms/uploads/php/files/c4670d1a3d24c8527db9c4b9ef23431c/85956710313.pdfIn PDF document text
  • https://mountainbrookbuilders.com/home/mountain/public_html/ckfinder/userfiles/files/ramagufewanibosekaweve.pdfIn PDF document text
  • http://tentauto23.ru/ckfinder/userfiles/files/36085284719.pdfIn PDF document text
  • http://clair-environnement.eu/catalogue_dynamique/file/29592052147.pdfIn PDF document text
  • http://le-nora.com/userfiles/file/76501065278.pdfIn PDF document text
  • https://psychotherapie-coeppicus.ch/upload/file/89638475045.pdfIn PDF document text
  • http://inbjnews.com/data/cheditor/0603/files/jofozenerujepibizifi.pdfIn PDF document text
  • https://anpheatingandac.com/nbloom/fckuploads/file/muluga.pdfIn PDF document text
  • http://ambulatorioveterinariopisillibertozzi.eu/userfiles/files/19235806504.pdfIn PDF document text
  • https://detector-billetes.com/Imagenes/file/vipemudaw.pdfIn PDF document text
  • http://biomedia.asia/upload/ckimage/files/26017270555.pdfIn PDF document text
  • http://www.cavice.fi/tiedostot/files/26542355085.pdfIn PDF document text
  • https://amagi.la/wp-content/plugins/formcraft/file-upload/server/content/files/1613c674e43d46---xexizowifoj.pdfIn PDF document text
  • http://www.centrosanmarco.eu/img/news/files/77373492297.pdfIn PDF document text
  • http://arredamentoambienti.it/img/file/pikerubemapow.pdfIn PDF document text
  • http://webbuilders.com/files/file/12812158671.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=android+record+call+programmaticallyPDF 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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