Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e06c16aa81c6168…

MALICIOUS

PDF

54.9 KB Created: 2021-09-15 20:05:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-22
MD5: 31c26d68346e70b8252f4ee786e5b492 SHA-1: 9d5ae2a7a37ae2271b2fac5a51dda290e8c6efa4 SHA-256: 4e06c16aa81c6168acb725db76ef15047e778d4bdb8f1eef8d0fc99acc006ebd
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF contains embedded JavaScript, which is often used to redirect users to malicious websites. The presence of multiple links pointing to compromised CMS uploads and disposable hosting further indicates a phishing or malware distribution scheme. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5455

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://logenamerica.com/userfiles/file/leguzezumobilorenani.pdf In PDF document text
    • http://www.vnos.vn/app/webroot/uploads/files/xelogoderivuparofobax.pdfIn PDF document text
    • https://etre-cheval.fr/Applications/MAMP/htdocs/etre%20cheval/news_pix/file/88462654960.pdfIn PDF document text
    • https://triangle-electronics.com/assets/userfiles/file/wavekotov.pdfIn PDF document text
    • http://lakesnwoodskerala.com/uploads/file/13718702312.pdfIn PDF document text
    • http://webcertain.ca/contentupload/fckeditorUploads/organization_/file/vobifafodawidaza.pdfIn PDF document text
    • http://wakingbeauty.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613af24ae7853---77518697225.pdfIn PDF document text
    • http://www.emporiocaritaspisa.it/wordpress/wp-content/plugins/formcraft/file-upload/server/content/files/161387bdb236a8---22272036891.pdfIn PDF document text
    • http://kaies.cn/upfiles/210901144158472279f49vuz.pdfIn PDF document text
    • http://clingac.com/d/files/rezezanupapo.pdfIn PDF document text
    • http://aostavet.it/userfiles/files/72927279426.pdfIn PDF document text
    • http://travelsi.ru/ckfinder/userfiles/files/xalerinufegi.pdfIn PDF document text
    • http://mesotects.com/wp-content/plugins/formcraft/file-upload/server/content/files/161412cf998549---potifetaduripasasetiwo.pdfIn PDF document text
    • https://limsurdua.com/contents/files/7606019337.pdfIn PDF document text
    • http://geombiagioschettino.eu/userfiles/files/xuzezesan.pdfIn PDF document text
    • https://esperanzadeavila.com/fotos/file/44562813097.pdfIn PDF document text
    • http://ageddfjtj.pretty-match.com/upload/files/zewadepore.pdfIn PDF document text
    • http://quimis.net/js/ckfinder/userfiles/files/27166044381.pdfIn PDF document text
    • http://splhardware.com/UploadFile/file/2021090512260473499.pdfIn PDF document text
    • https://soechi.com/userfiles/file/10647242559.pdfIn PDF document text
    • https://www.advids.io/wp-content/plugins/formcraft/file-upload/server/content/files/16141655436b6c---4972738207.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/81337693992.pdfIn PDF document text
    • https://jphotographyllc.com/userfiles/file/67070047046.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=how+to+add+text+to+instagram+photos+androidPDF link annotation

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