Malicious PDF — malware analysis report

Static analysis result for SHA-256 0254067d9b41c7be…

MALICIOUS

PDF

64.3 KB Created: 2021-08-18 16:51:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 32c4c4eb1510773039361b87113a06a4 SHA-1: 2c5c236b7665da1e08a24c6f9dcc01750c648f7f SHA-256: 0254067d9b41c7bea453f5c8495a4367cac57917c594e7f681345635564b1fc5
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous URLs pointing to compromised WordPress sites and other disposable hosting, which are likely used to distribute phishing content or further malware. The presence of embedded URLs and the nature of the heuristics suggest it is intended to lure users to malicious sites, potentially as part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9560

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://hoffmanowska.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1607328ca56a5d---dekomidabizokiruke.pdf In PDF document text
    • https://eyestech.in/wp-content/plugins/super-forms/uploads/php/files/h5c161prrk8dc0n4u2h9qbq8lt/zupigop.pdfIn PDF document text
    • http://resetimpianti.it/reset/public/file/38257626596.pdfIn PDF document text
    • https://muachungbaohiem.com/uploads/userfiles/file/dobijaxufofodorubuve.pdfIn PDF document text
    • http://chukguwang.com/files/fckeditor/file/75525656604.pdfIn PDF document text
    • http://longarmacademy.net/fckeditor/userfiles/file/nokopomid.pdfIn PDF document text
    • https://www.simplythebestevents.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160bd5dacbbcac---lakenuretiloz.pdfIn PDF document text
    • http://www.risingstars.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160ca0cd27e103---69831141489.pdfIn PDF document text
    • http://co-wemart.com/careeruserfiles/file/95688554084.pdfIn PDF document text
    • https://rescue.bg/wp-content/plugins/formcraft/file-upload/server/content/files/160918ec9eb05d---22275068692.pdfIn PDF document text
    • http://lamgi.pl/ckfinder/userfiles/files/saxototiseduw.pdfIn PDF document text
    • https://ksuskalology.com/images/file/sogomutiriviroruz.pdfIn PDF document text
    • http://kipia-nn.ru/userfiles/file/zafam.pdfIn PDF document text
    • http://www.thebetterinsurance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a54c870e218---91823793997.pdfIn PDF document text
    • http://chocolatycakes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ca8d092cfe---24184890992.pdfIn PDF document text
    • https://trungtamgiasuhcmmq.com/uplaod/quangtri/files/nevuzemafuxuvefufujor.pdfIn PDF document text
    • https://grafitpoint.ru/wp-content/plugins/super-forms/uploads/php/files/02bf80958f33ca1c5d2b73f1ca6c4ad1/fedaj.pdfIn PDF document text
    • http://physio-praxismitte.de/userfiles/zimofowoxakesexivuzum.pdfIn PDF document text
    • http://vet-arrighicolangelicristilli.eu/userfiles/files/37243012423.pdfIn PDF document text
    • http://ateliergermain.net/sites/default/files/file/22026790539.pdfIn PDF document text
    • https://www.cedicar.com/wp-content/plugins/formcraft/file-upload/server/content/files/160784925f3ba5---lifofaginewebewifavenumu.pdfIn PDF document text
    • https://francois-daulte.com/ckfinder/userfiles/files/30183039244.pdfIn PDF document text
    • https://www.hungarianassociation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611560140ea48---xobesobezagedomesawu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=introducci%C3%B3n+al+derecho+abelardo+torr%C3%A9+pdfPDF link annotation
    • http://e1pl2.nazwa.pl/busy/fotki/file/kilubigogiloterugazog.pdfIn PDF document text

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