Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dad0bacb9598c60…

MALICIOUS

PDF

79.1 KB Created: 2021-03-22 18:18:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5537bc5b8a6a2f7b4826513fab3c4c79 SHA-1: 0e72377b8a3b45a4c1ed36ac576bdef6c9d73f59 SHA-256: 3dad0bacb9598c604b7e56924d024502ce4309b69f2a606f58ce5e38abc0432e
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file, generated by wkhtmltopdf, contains numerous external links, many of which are part of a link farm strategy. The ClamAV detection 'Pdf.Phishing.Trojan' and the presence of suspicious URLs suggest a phishing or SEO manipulation attempt. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4774

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://leonvi.ru/award?keyword=deficiencia+de+vitaminas+y+minerales+en+mexico+pdf
    • https://lukumupanulafaz.weebly.com/uploads/1/3/4/6/134683212/9c019859e0e.pdf
    • https://cdn-cms.f-static.net/uploads/4445128/normal_60198f7c6443b.pdf
    • https://static.s123-cdn-static.com/uploads/4426954/normal_5fdd34eaca633.pdf
    • https://cdn.sqhk.co/duwenaxiseve/ciejchi/zombie_hunter_survive_the_undead_mod_apk.pdf
    • https://cdn-cms.f-static.net/uploads/4401696/normal_60503efdb91b3.pdf
    • https://static.s123-cdn-static.com/uploads/4494677/normal_5fcc91e1efe9a.pdf
    • https://cdn-cms.f-static.net/uploads/4493227/normal_6055344647a92.pdf
    • https://cdn.sqhk.co/limiwebu/eChgtie/tower_defense_simulator_john_skins.pdf
    • https://cdn.sqhk.co/gijimexuv/bajexjb/21757318648.pdf
    • https://cdn.sqhk.co/rabataxuvax/jijjnje/rivals_esports_moba_manager_apk_mod.pdf
    • https://cdn.sqhk.co/kenoramof/0gcichi/best_homemade_detox_for_belly_fat.pdf
    • https://cdn.sqhk.co/zubavagi/0e5jijc/luwoxiporowekumu.pdf
    • https://static.s123-cdn-static.com/uploads/4444374/normal_5ff1dc58ac4a0.pdf
    • https://cdn.sqhk.co/domuduxuro/ijSLjd3/hmrc_cumbernauld_postal_address_corporation_tax.pdf
    • https://babejogoj.weebly.com/uploads/1/3/1/8/131856270/bc36633e0.pdf
    • https://cdn.sqhk.co/kogeledewafo/ihwykjb/archery_black_bear_hunting_videos.pdf
    • https://cdn.sqhk.co/vefoveted/RAjghfC/ritofasejowaloguta.pdf
    • https://cdn-cms.f-static.net/uploads/4387035/normal_601b5ffb8b150.pdf
    • https://cdn.sqhk.co/suxidixip/KbghhjB/20503188252.pdf
    • https://static.s123-cdn-static.com/uploads/4472501/normal_60048ecc72ea2.pdf
    • https://s3.amazonaws.com/wozoxub/parquet_file_format_compression.pdf
    • https://s3.amazonaws.com/xotomisen/how_to_port_my_old_mts_number.pdf
    • https://s3.amazonaws.com/lupuvogotog/jowitijomokovovukosazabux.pdf
    • https://s3.amazonaws.com/rakabexozu/bleach_brave_soul_mod_apk_offline.pdf

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