Malicious PDF — malware analysis report

Static analysis result for SHA-256 64e54db1e09c3bbc…

MALICIOUS

PDF

58.6 KB Created: 2021-03-23 01:24:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cd72bd50008c3f047a7a61c157494111 SHA-1: 2e2998ee071fa94b6742fe9e94898d3fa4bb927a SHA-256: 64e54db1e09c3bbcb8d46e550bec0c187a8fc8893e2c7e817b2de1c37a8278f1
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many of which point to PDF files hosted on file-sharing services, indicating a link farm or redirection scheme. The ClamAV detection and ML classifier further support its malicious nature. While no scripts were explicitly extracted, the PDF structure and numerous external links suggest it is designed to redirect users to malicious content, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7380

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://vilenefex.ru/award?keyword=s.+t.+a.+b.+l.+e.+program+pdf
    • https://xafosaxit.weebly.com/uploads/1/3/1/8/131859261/tobizoxazap.pdf
    • http://kemytbok.xyz/titikt0mbu.pdf
    • https://juvetobewuneted.weebly.com/uploads/1/3/3/9/133997509/zekaxitibomedonago.pdf
    • https://najatiwexit.weebly.com/uploads/1/3/4/0/134041182/7291480.pdf
    • https://tijaworiluwulu.weebly.com/uploads/1/3/4/3/134363233/e23991b.pdf
    • http://help-feedback-amzn3.xyz/65360548000kee04.pdf
    • https://cdn.sqhk.co/kagaxavog/hijDgd8/ice_cream_4_horror_game_download_apk.pdf
    • https://moxuronanupew.weebly.com/uploads/1/3/4/5/134597487/2fc61.pdf
    • https://cdn.sqhk.co/wevexifimur/YDhdfqb/top_100_mobile_games_2020.pdf
    • https://lukadivosegiga.weebly.com/uploads/1/3/4/6/134679105/306484.pdf
    • http://ig-verifiedsbadge.com/binowisodopewipurokitoud8zp.pdf
    • https://cdn.sqhk.co/fisoxinizo/h6jggc4/rank_one_forms_risd.pdf
    • https://cdn.sqhk.co/gevagedubop/Hihhaii/59162264339.pdf
    • https://gewujezugiwo.weebly.com/uploads/1/3/4/7/134754524/zeboki_jenaziraluniwe.pdf
    • https://uploads.strikinglycdn.com/files/a894ae50-6e4c-48ef-9558-48ab702a9450/40992718977.pdf
    • http://fevojofutowi.epizy.com/5726043537.pdf
    • http://litezopufesox.epizy.com/beatles_trivia.pdf
    • https://uploads.strikinglycdn.com/files/0c570e6f-236d-4ee0-8281-38499ff5e6cc/43866674880.pdf

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