Malicious PDF — malware analysis report

Static analysis result for SHA-256 778881cdfa5ad310…

MALICIOUS

PDF

38.0 KB Created: 2021-03-09 08:43:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1ef8868558f9a1f2e473be077738408e SHA-1: 958a38db84aef7497d25297ccad1dd660f2589b0 SHA-256: 778881cdfa5ad3105f0baa9453eab6d72957106676ec201908b529259c8f18e6
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file is identified as malicious by ClamAV and an ML classifier. It employs an image-only lure, typical of phishing, with a clickable action triggering an external URI. The document body is heavily obfuscated, but the presence of a suspicious URL suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6842

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 38 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://kuzutuzo.ru/award?keyword=asme+b31.+3+pdf+download
    • https://cdn.sqhk.co/rojarasam/4ZYuXgc/tabud.pdf
    • https://cdn.sqhk.co/mulepava/1WbTGd0/top_speed_formula_car_racing_games.pdf
    • https://cdn.sqhk.co/wofikubid/AEgnYhg/sears_golf_bags.pdf
    • http://detonic-deutschland.website/the_over_40_hormone_reset_diet_review8xzcz.pdf
    • http://arnautmebel.ru/mastermind_rogue_5etg8pe.pdf
    • http://babbieshop.ru/nugumobozotq58l9.pdf
    • https://cdn.sqhk.co/tipadasa/i1N8JMt/blue_cross_blue_shield_federal_cob_form.pdf
    • http://optamorem.com/how_do_i_reset_my_hunter_xc_sprinkler_systemsl4sv.pdf
    • https://uploads.strikinglycdn.com/files/271739ca-e20d-49c7-a504-697a73bd850c/digaxe.pdf
    • http://toxukanubevaga.rf.gd/largest_law_firms_in_nj.pdf
    • https://uploads.strikinglycdn.com/files/6d18d4b6-3c0f-405a-8191-05bd1ed96e0a/west_bend_82707b_stir_crazy_electric_hot_oil_popcorn_popper_machine.pdf
    • https://uploads.strikinglycdn.com/files/6362bedf-ea3a-4758-a353-0e63587401a4/99934961015.pdf