Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb06286afd5f693f…

MALICIOUS

PDF

67.8 KB Created: 2021-09-04 21:52:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: c52ebb128c082b268f008a226b62ee5a SHA-1: dd9b7d78138037d3ca7601057393869e9ce24a7a SHA-256: fb06286afd5f693fa83f9068033d43e8e2672475efaf36a1fb8a7d4959bc81c4
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating it is likely a phishing or malware distribution lure. The file functions as a link farm, containing numerous URLs pointing to various websites, some of which are hosted on compromised CMS uploads. While no scripts were explicitly extracted, the PDF structure and heuristic firings suggest it is designed to redirect users to potentially harmful external content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6947

Heuristics 5

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://seeyounow.net/userfiles/file/bafasunudamudedej.pdf In PDF document text
    • http://gandolfiarchitetti.com/userfiles/files/37117833528.pdfIn PDF document text
    • https://mertlakustika.cz/images/pages/file/1471015149.pdfIn PDF document text
    • http://bagandpack.ru/wp-content/plugins/super-forms/uploads/php/files/69f2c59c4877f1a3fa9e9d0b0f6ba7de/5821539771.pdfIn PDF document text
    • https://ijacr.net/assets_admin/ckfinder/core/connector/php/uploads/files/69111647319.pdfIn PDF document text
    • http://ville-dammarie.com/ckfinder/userfiles/files/bipulidedadejipixufe.pdfIn PDF document text
    • https://www.ediliziaindustriale.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b1b49b56d0b---vizidakesunanani.pdfIn PDF document text
    • https://tahubunting1.com/contents//files/gorexenufabajaf.pdfIn PDF document text
    • http://www.anieliasfx.com/uploads/textareas/file/97475201764.pdfIn PDF document text
    • http://drprdesaihospital.com/uploads/bazepow.pdfIn PDF document text
    • http://al-bandak.com/userfiles/file/82779557534.pdfIn PDF document text
    • http://www.guaitoli.eng.br/wp-content/plugins/formcraft/file-upload/server/content/files/1610ead646a587---lolovetobexonup.pdfIn PDF document text
    • http://beerskiboot.com/img/upload/file/78072033970.pdfIn PDF document text
    • http://nuitsdartistes.eu/images/file/tebojel.pdfIn PDF document text
    • https://certifiedmoversinc.com/wp-content/plugins/super-forms/uploads/php/files/35f71a04a3b1c6f9ffc0926b2fd08731/49638548160.pdfIn PDF document text
    • https://www.bountyvacation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160756d52c6e27---budisonevonibigajugat.pdfIn PDF document text
    • https://ddshower.com/ckfinder/userfiles/files/voroj.pdfIn PDF document text
    • http://www.kindytennis.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd58ae28a8b---41374792214.pdfIn PDF document text
    • https://aljazeerahpetroleum.ae/userfiles/files/zipetenurejeluw.pdfIn PDF document text
    • http://cohn-vossen.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132b55f6849b---31917204383.pdfIn PDF document text
    • http://rowadhr.com/app/webroot/upload/files/rovetefuluwowis.pdfIn PDF document text
    • https://qamarapps.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079107d2a93d---58580489378.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=modes+of+dissolution+of+partnership+firm+pdfPDF link annotation

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