Malicious PDF — malware analysis report

Static analysis result for SHA-256 30878f892f658704…

MALICIOUS

PDF

49.8 KB Created: 2021-09-17 15:24:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 566e293ef9c8ef2a18717461b59bd7b7 SHA-1: 49bd002ec359c80ed41c9d2561c250a7494c039f SHA-256: 30878f892f6587047c8fd6cfe8e72c74470ec330378c969991e09aba38f28ace
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a large number of external URIs, many of which point to compromised WordPress sites or disposable hosting, indicating a link farm designed to redirect users to malicious content. ClamAV detection as Pdf.Phishing.Trojan further supports a malicious classification. The embedded JavaScript likely facilitates the redirection or download of further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6901

Heuristics 6

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://gmonlinestore.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613216a9738da---28111217669.pdf In PDF document text
    • http://ilink.pl/userfiles/file/57611167252.pdfIn PDF document text
    • https://alohasafaris.com/files/wunotoxakaxekuse.pdfIn PDF document text
    • http://cbstav.cz/file/lonazori.pdfIn PDF document text
    • http://ux-school.ru/files/files/noketekozexe.pdfIn PDF document text
    • http://daotaoyduoc.org/wp-content/plugins/super-forms/uploads/php/files/efce408d341a9a961b13d06d456a7be3/13373938744.pdfIn PDF document text
    • http://studiosiciliani.eu/userfiles/files/66581562197.pdfIn PDF document text
    • https://klcmekatronik.com/ckfinder/userfiles/files/62448778032.pdfIn PDF document text
    • http://achwvs.love-mrt.com/upload/files/sikimig.pdfIn PDF document text
    • https://mudateconmigo.cl/wp-content/plugins/super-forms/uploads/php/files/116e7dfc584ee0b51378a834545c7ee2/zibipejasedu.pdfIn PDF document text
    • https://www.espymetcalf.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141de79d6563---fuzubunijefasozejidune.pdfIn PDF document text
    • http://gongotour.com/FileData/ckfinder/files/20210917_3C5AAC0979643678.pdfIn PDF document text
    • http://radioevangilereal.com/assets/ckfinder/core/connector/php/uploads/files/21607974790.pdfIn PDF document text
    • http://aan.kz/ckfinder/userfiles/files/97952193276.pdfIn PDF document text
    • https://megacook.pt/site/upload/file/11816958942.pdfIn PDF document text
    • http://kazuma.ru/ckfinder/userfiles/files/77662467957.pdfIn PDF document text
    • http://otohyundaidanang.com/uploads/image/files/lunemumumigikifidam.pdfIn PDF document text
    • https://dpt-mh.com/uploads/news/files/gemadexebakelul.pdfIn PDF document text
    • http://grandrosso.com/js/upload/files/2737901287.pdfIn PDF document text
    • https://www.toptalentusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a40cc99c7d---zavivivozupakizok.pdfIn PDF document text
    • http://hfnhsw.com/upload/files/pusokuwikeleripo.pdfIn PDF document text
    • http://www.americaninvest.net/upls/files/63284335614.pdfIn PDF document text
    • http://surausa.com/uploads/files/tuzuvugilega.pdfIn PDF document text
    • https://pre-www.bridge-college.com/uploaded/ckeditor/files/17395124775.pdfIn PDF document text
    • http://sriagasthiyarastro.com/FCKeditor/userfiles/file/vakusewebi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=clash+royale+hack+2021+iosPDF link annotation

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