Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee44ca4321e15e87…

MALICIOUS

PDF

48.0 KB Created: 2021-09-29 08:45:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 11adcd9ef26029c868309ae8dcc39db7 SHA-1: 1ce8714b4771926009a02cf139ecd5466cf73382 SHA-256: ee44ca4321e15e8741dc1f991dd729078dfc6a01a1be2a2671e18123ad75c544
124 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as a phishing trojan and exhibits characteristics of a link farm, with numerous embedded URLs pointing to potentially malicious content. The ML classifier also indicated a high probability of maliciousness. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest an attempt to redirect users to external sites, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5934

Heuristics 4

  • 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.
  • 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://pttaccounting.com/userfiles/files/23257929825.pdf In PDF document text
    • http://art-wonders.com/ckeditor/ckfinder/core/connector/php/uploads/files/86149605443.pdfIn PDF document text
    • http://mabifitness.it/userfiles/files/goxurenumune.pdfIn PDF document text
    • https://eko-briketes.lv/userfiles/files/512546801.pdfIn PDF document text
    • http://daltan.hu/userfiles/file/17601701982.pdfIn PDF document text
    • http://hutnia.pl/userfiles/file/jofatexole.pdfIn PDF document text
    • https://www.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1614873877a811---92113747705.pdfIn PDF document text
    • https://skywaytravelandholidays.com/ckfinder/userfiles/files/taxededokeposowa.pdfIn PDF document text
    • http://orlickachata.cz/files/files/80968356851.pdfIn PDF document text
    • http://hopkim.vn/upload/files/83764391839.pdfIn PDF document text
    • http://alhegazgroup.com/userfiles/file/90064946499.pdfIn PDF document text
    • http://afro-safari.com/upload/files/gefupakadikoginujetitave.pdfIn PDF document text
    • https://ccskin.com/geektic/files/98756476350.pdfIn PDF document text
    • http://divapharma.com/uploaded/file/wukubarugoko.pdfIn PDF document text
    • http://mayjack.com/upload/files/nonukukonu.pdfIn PDF document text
    • http://tlxzkj.com/uploads/file/212112254760.pdfIn PDF document text
    • http://edbiji.com/uploads/files/20210923044934_474136.pdfIn PDF document text
    • http://pmdrecycling.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139e98a7996a---20221243609.pdfIn PDF document text
    • https://mudrun.com/home/mud/public_html/ckfinder/userfiles/files/wawefezezedureturu.pdfIn PDF document text
    • https://arichaindia.com/userfiles/file/torakabukirifutiganeza.pdfIn PDF document text
    • http://seksdagen.nl/userfiles/file/44929026866.pdfIn PDF document text
    • http://tuttotop.com/userfiles/files/14770828893.pdfIn PDF document text
    • http://cbestdesign.com/ckfinder/images_store/files/rofot.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=rope+hero+black+hole+mod+apkPDF link annotation

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