Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd8de0c8b0baac87…

MALICIOUS

PDF

65.1 KB Created: 2021-08-01 00:05:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: f06782dd9f60a59a334caa249f5bba78 SHA-1: bc0b21aa423c51c3a7159b14227042a027b6b624 SHA-256: cd8de0c8b0baac87a2b5bd8cf6475497651fa6579e9db56c5cd9016c16b892b1
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a PDF document that functions as a link farm, directing users to various URLs, some of which are hosted on compromised WordPress sites. The presence of multiple external URIs and link farms suggests an attempt to distribute or redirect users to malicious content, likely for phishing or malware distribution. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports this assessment.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4667

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://nomylo.ru/uplcv?utm_term=gta+san+andreas+lite+apk+%2B+datos+obb PDF link annotation
    • https://oteaexpert.fr/cite_imgs/file/raragesopanelowasanujeb.pdfIn PDF document text
    • http://prestizhstroycompany.ru/SITE/files/editor/file/52812772767.pdfIn PDF document text
    • https://f1com.ge/wp-content/plugins/super-forms/uploads/php/files/9f6ddc12bf4a5343b594591623350b88/gofinomapererupubibuxe.pdfIn PDF document text
    • http://www.asejnrtigers.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca639cb666---97146458479.pdfIn PDF document text
    • http://plenaadoracao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608905df7db65---pufasalujekipisawo.pdfIn PDF document text
    • http://rudolphalexander.com/uploads/files/71239933802.pdfIn PDF document text
    • http://architettotoma.it/userfiles/files/supokovotafepiwas.pdfIn PDF document text
    • http://www.supercarrentalsofmiami.com/wp-content/plugins/formcraft/file-upload/server/content/files/160adb95c16ca1---22412081828.pdfIn PDF document text
    • https://whitelightdesign.com/wp-content/plugins/super-forms/uploads/php/files/5f5907766da0c7826657d0dd2e5fd8db/37938121647.pdfIn PDF document text
    • https://506hlapeta.com/files/file/89775980322.pdfIn PDF document text
    • http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/qm87mk4rigu7fsokm7vnce2e07/wapekipezalowalasuvugiwok.pdfIn PDF document text
    • https://www.synergyheart2heart.team/wp-content/plugins/super-forms/uploads/php/files/bofpjg6ltgp2o32odusjq6g9l9/tedonigafolibuje.pdfIn PDF document text
    • https://hoffmanowska.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160f2c7434051d---19511413617.pdfIn PDF document text
    • http://designerhouse.ru/upload/files/1985762067.pdfIn PDF document text
    • https://ethiquedevelopers.com/wp-content/plugins/super-forms/uploads/php/files/363bd7c4e2e0e35e275b1b95cb8e6f11/mejeg.pdfIn PDF document text
    • https://www.servicioscalibrados.com/wp-content/plugins/super-forms/uploads/php/files/710ac869cd0ad10534a8c302c2bceaba/xewavik.pdfIn PDF document text
    • http://www.scsi.coop/wp-content/plugins/super-forms/uploads/php/files/000fedd2054c1d199bce82ced3c98f50/saxiporilejajuruzemapejem.pdfIn PDF document text
    • http://montaze.org/democms/userfiles/file/ruxufodarolozovef.pdfIn PDF document text
    • https://alfa-pechati.ru/wp-content/plugins/super-forms/uploads/php/files/4848905ae21afc7b52fbefa910ee7805/9804065739.pdfIn PDF document text
    • http://radissonhoteltraining.com/userfiles/file/32574647214.pdfIn PDF document text
    • http://nhs1968.com/clients/65482/File/zorokebovibeboxibofaris.pdfIn PDF document text
    • https://camile.vn/wp-content/plugins/super-forms/uploads/php/files/hrt3nkmcdtsr1tlprf6ukro44l/64734170793.pdfIn PDF document text
    • http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160af9c153d9f9---zaxafajoz.pdfIn PDF document text
    • http://gtlmarinefuel.com/userfiles/file/lomasutimupo.pdfIn PDF document text
    • https://paperland.bg/uploads/file/77446745218.pdfIn PDF document text
    • http://casaatlantida.com/userfiles/file///xoboparoj.pdfIn PDF document text

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