Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab1d3b3f47ff8b1c…

MALICIOUS

PDF

65.7 KB Created: 2021-07-04 07:48:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 601e08d84047fe91a725fb01756c0db4 SHA-1: 49f83875768776331ef3fc73a0de81ea351057ad SHA-256: ab1d3b3f47ff8b1c5e0ecd3811095fca6c43fc08c99f71a67c2f9ba2dc57eced
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It functions as a link farm, directing users to multiple compromised websites and disposable hosting domains. The primary purpose appears to be to lure victims to these sites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6756

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://ecoretras.com/file/razuzi.pdf In PDF document text
    • https://tecnibat.net/uploads/archivos/98016592820.pdfIn PDF document text
    • http://smartcookieacademy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ddb5c59f92f---gibubotudolexazize.pdfIn PDF document text
    • http://www.lightingandhvacexpo.com/wp-content/plugins/super-forms/uploads/php/files/edca868518cf31b071307ebd158686dc/kewufaduzenipodenazobelu.pdfIn PDF document text
    • http://zeguvietnam.com/uploads/ckfinder/files/53147966768.pdfIn PDF document text
    • http://host.keraladreamhomes.com/~viswabrahmathach/admin/fckeditor/editor/filemanager/connectors/php/userfiles/file/60311482808.pdfIn PDF document text
    • https://www.cr-sdc.org/wp-content/plugins/super-forms/uploads/php/files/dfaaf0906d6259cc26259db7a67b4571/beridome.pdfIn PDF document text
    • https://www.temsilcisitesi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a97905a01a0---8821070315.pdfIn PDF document text
    • http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607c1f69bf9a3---vufokomobusivoledirufutud.pdfIn PDF document text
    • http://przychodnia-felinskiego.pl/uploads/editor/file/nevovokibediveguwad.pdfIn PDF document text
    • http://hauptlawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/38129570207.pdfIn PDF document text
    • http://www.investing-in-women.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ba72c90f952---27790706610.pdfIn PDF document text
    • http://bakerfamreunion.com/clients/1/13/13be4b03bdabdd3a133c3ee64ed6201b/File/34792906319.pdfIn PDF document text
    • https://hps-gruppe.com/wp-content/plugins/super-forms/uploads/php/files/oqh879i96b1ts05g9sf7of0a08/950948293.pdfIn PDF document text
    • https://www.frankreich-ferien.ch/wp-content/plugins/formcraft/file-upload/server/content/files/16086f9117d14b---bugowufizeg.pdfIn PDF document text
    • https://podiummagazinenews.com/ckfinder/userfiles/files/91158351141.pdfIn PDF document text
    • https://yziact.fr/wp-content/plugins/super-forms/uploads/php/files/6im7f1jjvekm8fu3df4susl2qn/wagukuxibupelugosexur.pdfIn PDF document text
    • http://954move.com/clients/4890/File/nazerogixubemafula.pdfIn PDF document text
    • http://megat.pl/uploaded/fck_files/file/83681254236.pdfIn PDF document text
    • http://jirehenl.com/userfiles/file/292229124027.pdfIn PDF document text
    • http://prodesign31.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1606f7ed53f03e---xibeguzutizuwozupalolu.pdfIn PDF document text
    • https://europawindow.com/app/webroot/img/main_content/files/zasuzanife.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=s+words+baby+girl+namePDF link annotation

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