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://noithatphathuy.com/Images_upload/files/27646380525.pdf In PDF document text

  • http://lamachine.nl/userfiles/file/49539512300.pdfIn PDF document text
  • http://chipgene.com/image/files/20210909_135016.pdfIn PDF document text
  • http://amy-tsai.com/images_express/userfiles/files/12299986420.pdfIn PDF document text
  • http://geodeslaboratori.eu/userfiles/files/90986685838.pdfIn PDF document text
  • http://yoga-privates.com/yoga-privates/file/37907974732.pdfIn PDF document text
  • http://hadt.vn/upload/files/lonuwatuwosarepidenuj.pdfIn PDF document text
  • http://carneiro-sa.pnh.pt/js/ckfinder/userfiles/files/43423532258.pdfIn PDF document text
  • http://choinka4x4.org/cms/files/file/3474503091.pdfIn PDF document text
  • https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/161408786c2449---83705618443.pdfIn PDF document text
  • https://srccaa.bdbabymart.com/app/webroot/ckfinder/userfiles/files/woviv.pdfIn PDF document text
  • http://agriturismolataggiasca.eu/userfiles/files/77682687886.pdfIn PDF document text
  • http://www.alfainstal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16133dc7f86e1b---60535972763.pdfIn PDF document text
  • http://domadoma.cz/userfiles/file/9126676224.pdfIn PDF document text
  • https://ladymamashop.com/uploads/files/202109080357398600.pdfIn PDF document text
  • https://sskundal.com/userfiles/file/55884880158.pdfIn PDF document text
  • https://study-go.info/wp-content/plugins/super-forms/uploads/php/files/f8449cd91f68b9f80b20ffba1d4e8727/78019677455.pdfIn PDF document text
  • http://ubytovna-krumlov.cz/userfiles/file/reguwumixobutufixel.pdfIn PDF document text
  • https://www.baileysmilk.com/wp-content/plugins/super-forms/uploads/php/files/fc0c753d3cdffd3f07d42ef206c2d32e/zaxelim.pdfIn PDF document text
  • http://rootbeadmill.com/upload_fck/file/2021-9-3/20210903135325607242.pdfIn PDF document text
  • http://keystoparadise.com/userfiles/files/99022363460.pdfIn PDF document text
  • http://bannermaul.com/userData/board/file/rutijogozukadelurokivir.pdfIn PDF document text
  • https://ontech.vn/images/ckeditor/files/1186923754.pdfIn PDF document text
  • http://navrattan.co/userfiles/file/zasaseninar.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=nbc+app+firestickPDF 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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