Malicious PDF — malware analysis report

Static analysis result for SHA-256 04144c3354eda32a…

MALICIOUS

PDF

64.9 KB Created: 2021-05-01 14:15:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 9eb64477cd615b002d645029fff2411d SHA-1: 98d340c2c9ebfe01c36f56b193eda32f4c860520 SHA-256: 04144c3354eda32a84db3960530df686b6cfdfb0ba74d421c0f563d4612608f4
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many pointing to disposable domains, indicating a link farm designed to obscure the ultimate destination. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' confirms this behavior. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution through the linked content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6589

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 https://baarspo.ru/strik?utm_term=how+much+do+wing+chun+classes+cost PDF link annotation
    • https://cdn.sqhk.co/zowonefaso/hghateO/chocolate_castle_cake_decorating_recipe.pdfIn PDF document text
    • http://mogoxopedutisaw.iblogger.org/easter_addition_and_subtraction_worksheets_for_kindergarten.pdfIn PDF document text
    • http://gojuvop.iblogger.org/bases_psicosociales_de_la_comunicacion.pdfIn PDF document text
    • https://cdn.sqhk.co/gewanunu/ieURiby/zombies_2_dolls_uk_zed.pdfIn PDF document text
    • http://wegolurubakisud.22web.org/aaja_mahi_song_mr_jatt.pdfIn PDF document text
    • http://zedukibawubige.22web.org/kowefozokur.pdfIn PDF document text
    • https://cdn.sqhk.co/gilitejeku/ehXhbVh/hd_black_wallpapers_for_android.pdfIn PDF document text
    • https://cdn.sqhk.co/lanumakefu/2hjNhdL/kawipanujubigeramun.pdfIn PDF document text
    • https://cdn.sqhk.co/jabisopomuxo/4jibthb/foxy_skin_minecraft_nova.pdfIn PDF document text
    • https://cdn.sqhk.co/letarezetap/CDWhbqq/bamogapewinifusofenarilog.pdfIn PDF document text
    • http://narawodosure.medianewsonline.com/28039283225.pdfIn PDF document text
    • http://gilesab.rf.gd/badger_garbage_disposal_model_500-_1_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/jawusawar/78076978535.pdfIn PDF document text
    • https://s3.amazonaws.com/verirejon/what_is_tp_link_username_and_password.pdfIn PDF document text
    • https://s3.amazonaws.com/xijuxosisomuna/ravelu.pdfIn PDF document text
    • http://fudixuxutinizow.rf.gd/93283205549.pdfIn PDF document text
    • https://s3.amazonaws.com/mejados/41670468562.pdfIn PDF document text
    • http://fuvarijes.atwebpages.com/apprendre_python_2._7.pdfIn PDF document text
    • http://bavodokebak.rf.gd/safety_1st_ear_thermometer_49659.pdfIn PDF document text
    • http://fejivexol.epizy.com/nupuviwefiwegekimi.pdfIn PDF document text
    • http://lexodewujigunem.epizy.com/burger_king_gutscheine_wien.pdfIn PDF document text
    • https://s3.amazonaws.com/dubiditiginowo/assainissement_autonome.pdfIn PDF document text

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