Malicious PDF — malware analysis report

Static analysis result for SHA-256 e63ed89ee106bd96…

MALICIOUS

PDF

56.6 KB Created: 2021-08-24 13:48:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 2924990c732d3c095f0ffd284d49ae8a SHA-1: 0cec465ec3c66eb11aa2f945f65261d6858e9859 SHA-256: e63ed89ee106bd962d68ef6a7df5f24c7c22bdcd26d04e63087462a10a3c0480
154 Risk Score

Malware Insights

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

The sample is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It functions as a link farm, embedding numerous URLs that point to compromised CMS uploads and disposable hosting domains. These links are likely intended to lure users into downloading further malicious content or submitting sensitive information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9075

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://doggystylzgrooming.com/admin/photos/file/giruwumivonesewiwe.pdf In PDF document text
    • http://sieckultury.pl/wp-content/plugins/super-forms/uploads/php/files/74366f4e866bc051f42911bd3fa1012c/lejorubasizabezubi.pdfIn PDF document text
    • http://travelport.pl/userfiles//file/96524974592.pdfIn PDF document text
    • https://bizdrive.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/160b572022832a---3788820235.pdfIn PDF document text
    • https://carthink.org/wp-content/plugins/formcraft/file-upload/server/content/files/161012d5d22bfe---lebafi.pdfIn PDF document text
    • https://agroadvanced.com/app/webroot/newsletters/editor/files/39409461760.pdfIn PDF document text
    • http://ptk-astana.kz/wp-content/plugins/super-forms/uploads/php/files/d1654c9f0976ce510d82586d8ce7250a/1528766172.pdfIn PDF document text
    • http://www.insight-assessment.com/ckfinder/userfiles/files/juzofekoraberazur.pdfIn PDF document text
    • https://amiablediamonds.com/wp-content/plugins/super-forms/uploads/php/files/6af3a23472e43b7bdeb83860e48474ea/71178447499.pdfIn PDF document text
    • http://aloeverajuice.cz/files/file/pexaneleximopujedudodefu.pdfIn PDF document text
    • http://www.theflightfest.com/wp-content/plugins/formcraft/file-upload/server/content/files/160808537133dd---217866026.pdfIn PDF document text
    • https://artasedanasingaraja.com/uploadfck/file/texomugenizulum.pdfIn PDF document text
    • http://redwoodpwr.com/wp-content/plugins/super-forms/uploads/php/files/g2uah6fjcq6ek280uhp2sh8c72/47488168320.pdfIn PDF document text
    • https://www.ideakliniksisli.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d00ab5b1bf6---38544737781.pdfIn PDF document text
    • http://bioscipublisher.com/files/upfiles/file/poxejumarekukoviwopeze.pdfIn PDF document text
    • https://smithsgame.com/calisma2/files/uploads/gevenujusamoranojud.pdfIn PDF document text
    • https://healthmatters.me/userfiles/file/lawixudufaxefumuz.pdfIn PDF document text
    • http://www.unidacardoso.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608a2ee685720---nenasomuga.pdfIn PDF document text
    • http://architettogherardi.eu/userfiles/files/nepixo.pdfIn PDF document text
    • https://www.bouldersudbury.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609b916a930fa---fipuxugizuwuruwozom.pdfIn PDF document text
    • http://ambcavallon.eu/userfiles/files/rudevijufiresuteb.pdfIn PDF document text
    • https://rhagro.com.mx/wp-content/plugins/super-forms/uploads/php/files/924c8290aa0ae28264096dac149dcbe4/gezogozuzapewov.pdfIn PDF document text
    • https://ksi-system.pl/editorfiles/file/vivonuweximolilibibe.pdfIn PDF document text
    • http://atlantichomeportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a149c23c376---vowusil.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=password+protect+pdf+to+normal+pdfPDF link annotation

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