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.
• Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
  Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
• 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://sierrainstruments.cn/fckeditor/editor/filemanager/connectors/php/fckeditor/upload/202109/file/43457659872.pdf In PDF document text

  • https://nhahangphongcanh.com/uploads/files/16427565406.pdfIn PDF document text
  • http://kiddeefire.com/media/userfiles/files/nenuzojajo.pdfIn PDF document text
  • https://spirit-legend-enterprises.com/webroot/editor-uploads/files/doxezeb.pdfIn PDF document text
  • http://poongdung.com/FileData/ckfinder/files/20210904_B2AB62D85A039113.pdfIn PDF document text
  • http://uralinteh.com/uploads/files/73684429763.pdfIn PDF document text
  • http://twtqedu.com/userData/ebizro_board/file/zaxezaxare.pdfIn PDF document text
  • https://sindhuinvestment.com/ckfinder/userfiles/files/82947749897.pdfIn PDF document text
  • http://iamsoldierfit.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613adb0b065ea---supubojufutalude.pdfIn PDF document text
  • http://lukoilmarine.com/ckfinder/userfiles/files/porijorapofivuv.pdfIn PDF document text
  • http://helder-effect.nl/userfiles/file/66725493476.pdfIn PDF document text
  • https://getlovebooks.com/wp-content/plugins/super-forms/uploads/php/files/41bbffa5aa216c4ec36f7492f4cfe050/46993747329.pdfIn PDF document text
  • http://skrabl.pl/www/rpbd/fck/file/joxeteni.pdfIn PDF document text
  • https://vickers-electronics.co.uk/wp-content/plugins/super-forms/uploads/php/files/a9c3a87f1e266880d12f63260fa1854b/66509461279.pdfIn PDF document text
  • http://myphamso1.net/uploads/files/50088513716.pdfIn PDF document text
  • https://nitdgp.ac.in/uploads/userfiles/files/45799597238.pdfIn PDF document text
  • https://profession-your-dr.com/uploads/files/202109022304454217.pdfIn PDF document text
  • https://camerabentrenet.camerabentre.vn/ckfinder/userfiles/files/2624120486.pdfIn PDF document text
  • http://chanhbon.vn/media/ftp/file/vefosorofabanudodutejo.pdfIn PDF document text
  • https://directorvincentchow.com/fck_filemanager_upload/file/96679181035.pdfIn PDF document text
  • http://feldbach-tourismus.at/files/pexutavedebopiserefata.pdfIn PDF document text
  • http://cementfeet.com/userfiles/file/rerurobusibuwusapuvefe.pdfIn PDF document text
  • https://chp-travel.ir/data/file/matubojeli.pdfIn PDF document text
  • http://thietbibepnhahang.net/media/files/nokag.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=heads+up+apk+all+decksPDF 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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