Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f7e825a29a71b05…

MALICIOUS

PDF

54.6 KB Created: 2021-06-12 23:07:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 284f551dd98a2f66593e447416e47565 SHA-1: 77f09427d3470a41d9ccfc1cb85e36368f1610b2 SHA-256: 7f7e825a29a71b05884d5802e8aac8aebe02885482cd2960619bdee7ebddc4aa
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a link farm pointing to various URLs, many of which are hosted on compromised WordPress sites or disposable domains. The heuristic firings indicate this is a phishing attempt, likely to trick users into downloading malware, as suggested by the ClamAV detection of 'Pdf.Phishing.Trojan'. No scripts were extracted, but the presence of embedded URLs and the link farm structure strongly suggest a malicious intent to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6678

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://garglob.ru/uplcv?utm_term=vidmate+app+2016+download+install PDF link annotation
    • https://geniodelweb.com/file/vekaxakonafu.pdfIn PDF document text
    • https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/9ed236eadba6b298a2459575db316d5d/zumiriripovolexu.pdfIn PDF document text
    • https://admonks.ru/wp-content/plugins/super-forms/uploads/php/files/e22cb8d4521a8957858686dee5641032/24151827691.pdfIn PDF document text
    • https://sipsib.ru/wp-content/plugins/super-forms/uploads/php/files/a1698f947150a94a327e368948eb8ca5/gusimedofaguvalubaxirepoz.pdfIn PDF document text
    • https://aslimitada.com/userfiles/file/valuvamaled.pdfIn PDF document text
    • http://topas.lt/userfiles/file/nozepupaxexifux.pdfIn PDF document text
    • http://nc2e.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160b6572c86f16---zejudajugu.pdfIn PDF document text
    • http://vasilii-orlov.fun/wp-content/plugins/super-forms/uploads/php/files/d8f954f191d82ea7a5e3fb63b18f339e/senagonadamobusi.pdfIn PDF document text
    • http://mayfamilycircle.com/clients/5/53/53cd9f4101e72b768929e5daf979c2da/File/vomodarikizo.pdfIn PDF document text
    • https://sieompaysdebray.fr/lesiom/txt/imgadmin/file/xowepimaxini.pdfIn PDF document text
    • http://pulsrmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088b42aec6cf---pegomeza.pdfIn PDF document text
    • http://romanakladatelstvi.cz/userfiles/file/xupuzukumiwelufukav.pdfIn PDF document text
    • http://penoplex24.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a22349da726---jigawure.pdfIn PDF document text
    • http://euro520.net/userfiles/file/16222083461705577292.pdfIn PDF document text
    • http://clinicacomciencia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16091b851e0642---93676375871.pdfIn PDF document text
    • https://costumeworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac5e9a05d2d---51602810193.pdfIn PDF document text

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