Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce8e70aab2cec12f…

MALICIOUS

PDF

47.6 KB Created: 2021-09-05 14:50:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 6408db0ae0f220f1317f71b89759115d SHA-1: 79c8b19c996b4b7145f01429519a7ef8bdba1c0f SHA-256: ce8e70aab2cec12f6b9493f7f1fbde8f10ca30b77419df0fa57fbd80cc83780c
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, which is a common technique for executing malicious code or redirecting users. The numerous external links, many pointing to compromised WordPress sites or disposable hosting, suggest a phishing or malware distribution attempt. ClamAV detection as 'Pdf.Phishing.Trojan' further supports the malicious nature of this file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6676

Heuristics 6

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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 http://www.agrosystem.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1607fc6fabc4aa---bopubitugamigajid.pdf In PDF document text
    • http://jarosi.hu/files/file/zifimereweboponulurofaz.pdfIn PDF document text
    • http://outspokenholland.com/userfiles/fckFile/20210530090445.pdfIn PDF document text
    • https://euchebnici.com/img/file/lapovidot.pdfIn PDF document text
    • http://circolosilverblufitnessclub.eu/userfiles/files/gaxupowiponenikas.pdfIn PDF document text
    • https://hohsingfiber.com/ufiles/files/vamemegi.pdfIn PDF document text
    • http://www.unidacardoso.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160ad8079db7a6---96807460032.pdfIn PDF document text
    • https://sunwayhk.com/louis/STARKGROUP/ckfinder/userfiles/files/77761231793.pdfIn PDF document text
    • http://christschoolblr.in/userfiles/file/wiwuxugefukitinitasesokop.pdfIn PDF document text
    • https://clubforeducation.com/FCKeditor/userfiles/file/fimasesimuguzarof.pdfIn PDF document text
    • https://zhansq.cn/upload/file/73116106755.pdfIn PDF document text
    • http://kingsfinancialconsulting.com/userfiles/file/66921660418.pdfIn PDF document text
    • https://qualitycountscleaning.com/wp-content/plugins/super-forms/uploads/php/files/b2568bb61546c32de6e6aca287f744ca/14462116232.pdfIn PDF document text
    • http://falconfam.com/ckfinder/userfiles/files/nazidojidibebezote.pdfIn PDF document text
    • https://canadiancontractorservices.com/wp-content/plugins/super-forms/uploads/php/files/l4mmr3mqgposgoqe0g21vpbms0/74212501115.pdfIn PDF document text
    • https://cancelaria.pl/galeria/file/fakuk.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/160af683eb083d---38201077616.pdfIn PDF document text
    • http://iideree.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609418301c539---kisarujokexotegojenoruw.pdfIn PDF document text
    • https://amirep.com/wp-content/plugins/super-forms/uploads/php/files/d15ec1d095ce80c75d3d9743c25df0d6/sevogafopipewotam.pdfIn PDF document text
    • http://gok-maciejowice.pl/js/ckfinder/userfiles/files/17444763701.pdfIn PDF document text
    • https://novzelandiya.ru/ckfinder/userfiles/files/29044290776.pdfIn PDF document text
    • http://lilit-realty.com/wp-content/plugins/super-forms/uploads/php/files/feam9ie8kj5s17vkr2o8n91eb5/zenivigejutoziv.pdfIn PDF document text
    • https://lokmangal.co.in/wp-content/plugins/super-forms/uploads/php/files/92ca98dc0d57a84dfcdfe55062a2d3a9/80839302820.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=tamil+nadu+government+holidays+2019+pdfPDF link annotation

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