Malicious PDF — malware analysis report

Static analysis result for SHA-256 9dc64aa33a9f06f0…

MALICIOUS

PDF

58.7 KB Created: 2021-09-22 18:18:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: a8bcb072161376f7fcb2dbeb079b9595 SHA-1: 5f61d357aca3194d7a6bef18feabbe199cf03e0d SHA-256: 9dc64aa33a9f06f0478fd0a2a5369ca8e5c628a6eb8a1a1d2fe73fc309fc2d9d
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 a phishing or malware distribution intent. It functions as a link farm, presenting numerous URLs that likely lead to malicious content or phishing sites. The presence of external URIs and compromised CMS upload links further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8763

Heuristics 5

  • 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.
  • 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://ketchas.ru/uplcv?utm_term=waldain+ke+liye+dua+in+arabic+text PDF link annotation
    • http://yoga-privates.com/yoga-privates/file/71998322369.pdfIn PDF document text
    • https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/b839da3f90890f7b05fd2ea3aea7eaca/dezegagegosipug.pdfIn PDF document text
    • http://rnralpha.cz/res/file/doborukewugowo.pdfIn PDF document text
    • https://fnb-concepts.com/images/uploads/files/27169280659.pdfIn PDF document text
    • https://wurstfargo.com/wp-content/plugins/super-forms/uploads/php/files/9724929b0a376bdffa631e8b1794cd8d/lujotijise.pdfIn PDF document text
    • http://nokianhakkablue.ru/ckfinder/userfiles/files/41612628029.pdfIn PDF document text
    • http://graviroz.hu/ckfinder/userfiles/files/munenu.pdfIn PDF document text
    • http://sky1981.com/asset/uploads/files/63736998369.pdfIn PDF document text
    • http://rimini-portal.de/bilderarchiv/file/42765086493.pdfIn PDF document text
    • https://equantumconsulting.com/files/files/12452759418.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/1614441a05cf12---73891574916.pdfIn PDF document text
    • https://mehreganimaging.com/images/upload/files/sagudonunevo.pdfIn PDF document text
    • http://aerotherminsulation.com/userfiles/file/31282602640.pdfIn PDF document text
    • http://stefanourso.com/public/userfiles/file/kabup.pdfIn PDF document text
    • http://www.recko.ru/ckfinder/userfiles/files/78638434219.pdfIn PDF document text
    • http://lsphc.com/userfiles/file///bibafip.pdfIn PDF document text
    • https://golf-tout-terrain.com/publish/page/file/40319715432.pdfIn PDF document text
    • http://taiwan-tsai.com/upload/files/negesuwepojetoxu.pdfIn PDF document text
    • http://celcg.pl/uploaded/file/73650520648.pdfIn PDF document text
    • http://entryexpress.online/chapter_images/files/85557807388.pdfIn PDF document text
    • http://www.phuongdonggolf.vn/app/webroot/uploads/files/77614722577.pdfIn PDF document text
    • http://shiny-baby.com/fileimage/file/voruzujexedevasadejuxi.pdfIn PDF document text
    • http://4reality.cz/userfiles/files/guzifovajukiboxunibat.pdfIn PDF document text
    • https://topclassgardening.nl/images/file/64905931697.pdfIn PDF document text

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