Malicious PDF — malware analysis report

Static analysis result for SHA-256 f06c606e8eabf8d0…

MALICIOUS

PDF

56.7 KB Created: 2021-07-26 12:46:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: d651d9294706401ffe8ed8622ba48529 SHA-1: c5c197c53af0c53ab18b48205e98cb99368803a2 SHA-256: f06c606e8eabf8d036108242888618520be689b466996e72489e29843726527c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links, many pointing to WordPress upload directories on various domains, suggesting a link farm designed to distribute further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. No scripts were extracted, and the document body was unreadable, limiting the analysis to the URL structure and heuristic findings.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9250

Heuristics 5

  • 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.
  • 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://www.toptalentusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160706f38d99bf---87560333433.pdf In PDF document text
    • https://regeneracion-capilar.com/wp-content/plugins/super-forms/uploads/php/files/5315dcce1e60e53f4984cefa2ce3a23c/87609619690.pdfIn PDF document text
    • http://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b5e5d2ac15c---zatamovukonuvilemu.pdfIn PDF document text
    • https://emergent-partners.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ba5078e752---tajawijenutivuxenit.pdfIn PDF document text
    • http://gf-location.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160d7a6591e18e---webegodisumefopaz.pdfIn PDF document text
    • http://deborahkay.com/ckfinder/userfiles/files/rinurasakepuvubirureka.pdfIn PDF document text
    • https://www.ayersworthglen.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc1ecc4ad0---zetifanavuwadetupa.pdfIn PDF document text
    • https://mithermomix.com.mx/wp-content/plugins/super-forms/uploads/php/files/425f96bccca16051cc2ac403ac89551f/dufafixa.pdfIn PDF document text
    • https://phoenixknights.co.uk/wp-content/plugins/super-forms/uploads/php/files/5f8e6fe9c46d699f2773c98a6f022cdf/68919989164.pdfIn PDF document text
    • http://lichnyiybrand.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1606d973e3b7ff---todikedonaku.pdfIn PDF document text
    • https://cmsschoolkg.org/userfiles/file/ridusagunotako.pdfIn PDF document text
    • https://www.scilights.com/wp-content/plugins/super-forms/uploads/php/files/35895870e5f58b9d5f738454da7e524b/74340125597.pdfIn PDF document text
    • https://arrayamed.com/userfiles/file/51377056370.pdfIn PDF document text
    • http://northcity.rs/slike/files/xofavinuvumadoponub.pdfIn PDF document text
    • https://vickers-electronics.co.uk/wp-content/plugins/super-forms/uploads/php/files/0521bcb0d51d4e24d35a3ec752aa7426/bilurosexaverazadupa.pdfIn PDF document text
    • http://www.stockholmswingallstars.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b013a963197---dolededelowujevirefen.pdfIn PDF document text
    • https://binarbaidservices.com/public_html/userfiles/file/malisi.pdfIn PDF document text
    • https://karinbentum.nl/uploads/file/wejarilefek.pdfIn PDF document text
    • http://mtcongnghiepxanh.com/upload/fckimagesfile/kuxafu.pdfIn PDF document text
    • http://bsp-plovdiv.org/ckfinder/userfiles/files/38901285272.pdfIn PDF document text
    • https://creativesilhouettes.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609e4fc5e1de4---nodogitisuxetofazip.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=who+is+the+ken+ganley+kia+spokeswomanPDF link annotation

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