Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a03c236f8b43d6c…

MALICIOUS

PDF

41.4 KB Created: 2021-03-12 01:51:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fc3537358a36ae4c041221bb654a0009 SHA-1: 4f9fdf0f76e446061bf67f5d886da2279623f8da SHA-256: 9a03c236f8b43d6c666b82d0ad2b77c56c91c0864a7c2f63e896cf6806778987
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and is flagged as a phishing lure by heuristics, indicating malicious intent. The document body is heavily obfuscated, but the presence of an external URI and the ML classifier's output strongly suggest it's designed to redirect users to a malicious site. The ClamAV detection further confirms its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6394

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 41 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://maypoin.ru/aws?utm_term=what+is+molecular+structure+of+crystal
    • http://folejaf.mypressonline.com/zugitererakixuxatawu.pdf
    • https://cdn.sqhk.co/pozusonitid/ghe1qii/game_sakura_school_simulator_online_gratis.pdf
    • http://vawojumu.22web.org/where_is_the_starter_in_a_chevy_equinox.pdf
    • https://cdn.sqhk.co/zudoputasafe/nYVWfgj/rojimirusenuwiruwojowuter.pdf
    • https://cdn.sqhk.co/revinoxu/bYPihyt/mefefigakavapifodimitak.pdf
    • http://zakukat.iblogger.org/pezib.pdf
    • https://cdn.sqhk.co/xolofiwano/gjnkxf1/50540263725.pdf
    • https://cdn.sqhk.co/fesakesovoka/gMifhhr/debozegoput.pdf
    • https://cdn.sqhk.co/diratukuz/jgpRjaL/green_papaya_menu_montgomery_al.pdf
    • https://cdn.sqhk.co/nufomewo/hgFBT8m/49962455788.pdf
    • http://lugabev.mygamesonline.org/hp_8600_plus_printer_specs.pdf
    • http://tetizeniwa.mypressonline.com/saturated_and_unsaturated_solutions_pogil.pdf
    • https://cdn.sqhk.co/tiwoxebu/dJii2gc/fighter_aircraft_mobile_game.pdf
    • https://cdn.sqhk.co/kagalitisup/hdidjhd/pet_adoption_adopt_a_rescue_animal.pdf
    • http://gagivukamuw.getenjoyment.net/mikesosetob.pdf
    • http://ziwixan.iblogger.org/silutokoneruwag.pdf
    • http://vivusefodubelep.epizy.com/15234493528.pdf
    • http://fixidil.atwebpages.com/zidebo.pdf
    • https://uploads.strikinglycdn.com/files/24bd2f8f-199e-4da2-b0d1-0022d6f4305e/32864220334.pdf
    • https://uploads.strikinglycdn.com/files/620557a6-62bc-48c0-a2a0-9f5c8bca092b/selenium_cucumber_java_maven_example.pdf
    • http://xakitum.epizy.com/what_does_starting_5_mean_in_basketball.pdf
    • http://zopatirek.epizy.com/ruzorobuwogoxuf.pdf
    • http://mokimonanogi.rf.gd/netflix_android_error_100.pdf

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