Malicious PDF — malware analysis report

Static analysis result for SHA-256 429a72f36e967465…

MALICIOUS

PDF

48.3 KB Created: 2021-09-04 20:33:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: add2296fc2f3ffc05eead20399b68a34 SHA-1: a7010952793eb48a632033eb269f8f72ae995ed5 SHA-256: 429a72f36e96746554cd155f5bdfca012bea719cd5124e2cd1d6e832008cc709
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was detected as malicious by ClamAV and an ML classifier. It functions as a link farm, containing numerous embedded URLs that point to compromised WordPress upload directories and other disposable hosting. These links likely lead to phishing pages or further malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9210

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 http://greenbiotech.vn/uploads/userfiles/file/12865218383.pdf In PDF document text
    • https://questyme.ca/userfiles/file/fuxanebowupo.pdfIn PDF document text
    • https://uleshuzataruhaz.hu/files/file/xonebigupu.pdfIn PDF document text
    • https://nnkcreations.com/userfiles/file/79564182536.pdfIn PDF document text
    • https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/528a7c04038aeffd15ee8e72fb89e309/taxoxemuragenisobekasebuk.pdfIn PDF document text
    • https://ngonluathan.vn/images/ckeditor/files/36321205234.pdfIn PDF document text
    • https://ctners.com/ckfinder/userfiles/files/vexovutikowikenokebugel.pdfIn PDF document text
    • http://www.itbaloch.com/wp-content/plugins/formcraft/file-upload/server/content/files/16113d084b444e---jodejubuvuwivotekeg.pdfIn PDF document text
    • https://www.quatainvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161243ee4e0764---nusapusolanebekovudox.pdfIn PDF document text
    • http://okeefesreef.com/ckfinder/userfiles/files/97640780624.pdfIn PDF document text
    • http://kajsanordstrom.com/userfiles/files/vadozewowofezefokalulosi.pdfIn PDF document text
    • http://thefutureofgolf.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1610a104a9b460---poxosexajirogarizofizatu.pdfIn PDF document text
    • http://saveursetsavoirs.fr/image/file/xugapodofuzoras.pdfIn PDF document text
    • http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16109c84f19508---64531613117.pdfIn PDF document text
    • http://herodumpsterrental.com/wp-content/plugins/super-forms/uploads/php/files/cf5991a93c2eaf372d91a6e998e9c853/bovujelipisoz.pdfIn PDF document text
    • https://microfocus-realize2020mea.com/wp-content/plugins/super-forms/uploads/php/files/94b60c11ad576195ab83b409886026b1/16523055235.pdfIn PDF document text
    • https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606cb3bd6fcc9---fabopom.pdfIn PDF document text
    • http://maslag.eu/userfiles/file/10816228992.pdfIn PDF document text
    • http://aarogyamedico.com/userfiles/file/buvafowodilavobabazulesid.pdfIn PDF document text
    • https://cald-lighting.com/wp-content/plugins/super-forms/uploads/php/files/f2bba31916e32ef875ef2b8bf44f9ab7/2884942301.pdfIn PDF document text
    • http://www.magicapro.it/wp-content/plugins/formcraft/file-upload/server/content/files/16081ce033fa78---30557098616.pdfIn PDF document text
    • https://scavilecis.it/userfiles/file/73802290825.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=retoucher+portfolio+pdfPDF link annotation

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