Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9d1ae72fce95b43…

MALICIOUS

PDF

45.6 KB Created: 2021-09-06 09:16:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: b55860d0bd29d00e01747234cdedd454 SHA-1: 5b100459ce4eb1b7aa8d286de7ef3832ec27ce3e SHA-256: f9d1ae72fce95b436fb92d5a7ae6187b9f3bf7c848e7c6637b4d9fba7d30f415
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many of which point to PDF files hosted on potentially disposable domains, indicating a link farm designed to obscure the ultimate destination. The presence of these links suggests an attempt to redirect users to malicious sites for phishing or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6852

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://acpiindia.com/userfiles/file/70809483136.pdf In PDF document text
    • http://kimwendelldesign.com/ckfinder/userfiles/files/53679080670.pdfIn PDF document text
    • http://bidmitt.com/img/files/file/32855068055.pdfIn PDF document text
    • https://szud94.hu/img/sajatfile/files/xilazasirizubofatulitanap.pdfIn PDF document text
    • http://cleanyachts.it/writable/public/userfiles/file/gifewakov.pdfIn PDF document text
    • http://www.mondzorgvesa-voorschoten.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16094db0c3f8bd---gajeruforabaxalipexok.pdfIn PDF document text
    • http://wami.cc/data/files/80976084339.pdfIn PDF document text
    • http://gwardiajuvenia.pl/zdjecia/fck/file/57049089873.pdfIn PDF document text
    • https://www.mysmilestudios.com/wp-content/plugins/super-forms/uploads/php/files/5b1f9230937e4e369f8bee8e697d92be/birujotozuj.pdfIn PDF document text
    • http://eco-versute.com/app/webroot/ckfinder/userfiles/files/74259047485.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=organizational+climate+a+review+of+theory+and+research+pdfPDF link annotation

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