Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a214dc51601824a…

MALICIOUS

PDF

79.6 KB Created: 2021-07-20 20:02:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: e3e497cb4f8b0aa1c24404284b7d7886 SHA-1: b4ed4e5c645cc25c605c976e1c60c42cc8fb72f0 SHA-256: 7a214dc51601824a8e0d6224750db704809bc345035afd52493013470c324ec1
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or malware distribution attempt. It contains numerous links pointing to compromised websites and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of external URIs and the overall structure strongly suggest it's part of a phishing campaign, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7437

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://aquaticlandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5256898cda---24012765698.pdf In PDF document text
    • https://qualitylightsolutions.com/wp-content/plugins/super-forms/uploads/php/files/459de13afb8cbf0424d643df3a8398d4/mukure.pdfIn PDF document text
    • http://www.aqsclimited.com/EditorImages/file/dewadaramopuvafofugewum.pdfIn PDF document text
    • https://bibliothequedesarts.ch/ckfinder/userfiles/files/dawatejobizipe.pdfIn PDF document text
    • https://www.havanasalsa-dance-tours.com/wp-content/plugins/super-forms/uploads/php/files/61a322ba3fae15e4ea7c20dcc0aab7cf/32776821342.pdfIn PDF document text
    • https://sevsport.info/wp-content/plugins/super-forms/uploads/php/files/af300408bdfb6faf8348b8510944ecc6/96407079423.pdfIn PDF document text
    • https://tfnd.org/wp-content/plugins/super-forms/uploads/php/files/8d952b7a275f446b413ac5127197cffc/pomubexima.pdfIn PDF document text
    • https://3dreamstudios.com/wp-content/plugins/super-forms/uploads/php/files/aa34f39ec8264a517b68a3110bf499aa/nugawedeketukuturoto.pdfIn PDF document text
    • http://creptiles.dk/userfiles/file/81445773625.pdfIn PDF document text
    • https://earthchartercities.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a68363568df---99373994717.pdfIn PDF document text
    • http://superbarter.sk/media/file/87204921657.pdfIn PDF document text
    • http://retroldn.com/userfiles/file/63387459043.pdfIn PDF document text
    • https://revapackers.com/wp-content/plugins/super-forms/uploads/php/files/gppq1geop8j4l863srmi2kmm24/mulutep.pdfIn PDF document text
    • http://curry-box-deluxe.de/userfiles/file/xuvemibewitikelewoxe.pdfIn PDF document text
    • http://gaongonmaiphuong.vn/webroot/img/files/5338787411.pdfIn PDF document text
    • https://mithermomix.com.mx/wp-content/plugins/super-forms/uploads/php/files/1174751647a49965c5c64159d97ef128/24386004423.pdfIn PDF document text
    • http://www.sandzthabapanel.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160e7e9d8ad143---fulazumexapagivusilasuwiw.pdfIn PDF document text
    • http://tanphatinst.com/vietkiendo/upload/file/6998191707.pdfIn PDF document text
    • https://bioesteticaonline.it/file/24241641174.pdfIn PDF document text
    • https://northstarexecutivesearch.com/wp-content/plugins/super-forms/uploads/php/files/148ac5185a11f510d875a3e7f2a377d1/90319686385.pdfIn PDF document text
    • http://softwarefactory.nl/images/file/4387774748.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=howl%27s+moving+castle+easy+piano+sheet+music+pdfPDF link annotation

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