Malicious PDF — malware analysis report

Static analysis result for SHA-256 84cddb4c2c7fdd1e…

MALICIOUS

PDF

51.2 KB Created: 2021-09-11 01:28:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 623127dd54c5550ff283401ee55b4574 SHA-1: 3cf32cf108c42b30799e097636e76569e7751900 SHA-256: 84cddb4c2c7fdd1e1bb9f4d694cf1a6bface1c9c0f6cdb31be1eef30290106af
132 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1566.001 Spearphishing Attachment

This PDF file contains embedded JavaScript and numerous external URIs, indicating it is designed to redirect users to potentially malicious websites. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly suggests the document's purpose is to host a collection of links, likely for phishing or malware distribution. The ML classifier and ClamAV detection further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7786

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
  • 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.
  • JavaScript action low PDF_JAVASCRIPT
    PDF contains a /JavaScript action. 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 https://pixomot.ru/uplcv?utm_term=vlc+android+chromecast+not+working PDF link annotation
    • https://ruta.hu/ckfinder/userfiles/files/91257954290.pdfIn PDF document text
    • http://webcertain.ca/contentupload/fckeditorUploads/organization_/file/dodejofemiwajejiba.pdfIn PDF document text
    • http://aquarium-kochi.com/app/webroot/ckfinder/userfiles/files/wikabop.pdfIn PDF document text
    • https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/9bf96a7750cac5a620d040de189cfb4e/35219687174.pdfIn PDF document text
    • http://ty6600.com/userfiles/file/93444192140.pdfIn PDF document text
    • http://fundacjaproartis.pl/javascript/ckfinder/userfiles/files/xisugilekavorerevowaju.pdfIn PDF document text
    • http://duef.ru/public/file/wulumezelekide.pdfIn PDF document text
    • https://tpijobportal.com/ckeditor/ckfinder/userfiles/files/99137784124.pdfIn PDF document text
    • http://geodavidepini.it/userfiles/files/bazuxe.pdfIn PDF document text
    • http://rhondachem.com/d/files/34284148115.pdfIn PDF document text
    • http://www.tahi.hu/ckfinder/userfiles/files/mewiv.pdfIn PDF document text
    • https://shevian.com/images/file/32914071154.pdfIn PDF document text
    • http://www.sparkprototypes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613bcb0939921---dopegizasixoIn PDF document text

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