Malicious PDF — malware analysis report

Static analysis result for SHA-256 b914771ffb0f80c2…

MALICIOUS

PDF

159.6 KB Created: 2021-06-01 00:01:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 223acaf9eea2a3bebf6d4ac870d5cd06 SHA-1: a55d5af8fd228f78372137f8b4a191f6e2b5eada SHA-256: b914771ffb0f80c2e9f71f9410ad1b9236400046016569bea01cfc2df8be71ba
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9895

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://cdn-cms.f-static.net/uploads/4378604/normal_600dc282a212b.pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369935/normal_60272eb0abd10.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451932/normal_5fc7677febfac.pdfIn PDF document text
    • https://irlanc.ru/pbw?utm_term=%25D0%25B3%25D0%25B4%25D0%25B7+%25D0%25BF%25D0%25BE+%25D1%2580%25D1%2583%25D1%2581%25D1%2581%25D0%25BA%25D0%25BE%25D0%25BC%25D1%2583+%25D1%258F%25D0%25B7%25D1%258B%25D0%25BA%25D1%2583+8+%25D0%25BA%25D0%25BB%25D0%25B0%25D1%2581%25D1%2581+%25D0%25BB%25D0%25B0%25D0%25B4%25D1%258B%25D0%25B6%25D0%25B5%25D0%25BD%25D1%2581%25D0%25BA%25D0%25B0%25D1%258F+%25D0%25B5%25D1%2583%25D1%2580%25D0%25BE%25D0%25BA%25D0%25B8+%25D0%25BF%25D0%25B8%25D1%2587%25D1%2583%25D0%25B3%25D0%25BE%25D0%25B2In PDF document text
    • https://irlanc.ru/pbw?utm_term=%25D0%25B3%25D0%25B4%25D0%25B7+%25D0%25BF%25D0%25BE+%25D1%2580%25D1%2583%25D1%2581%25D1%2581%25D0%25BA%25D0%25BE%25D0%25BC%25D1%2583+%25D1%258F%25D0%25B7%25D1%258B%25D0%25BA%25D1%2583+8+%25D0%25BA%25D0%25BB%25D0%25B0%25D1%2581%25D1%2581+%25D0%25BB%25D0%25B0%25D0%25B4%25D1%258B%25D0%25B6%25D0%25B5%25D0%25BD%25D1%2581%25D0%25BA%25D0%25B0%25D1%258F+%25D0%25B5%25D1%2583%25D1%2580%25D0%25BE%25D0%25BA%25D0%25B8+%25D0%25BF%25D0%25B8%25D1%2587%25D1%2583%25D0%25B3%25D0%25BEPDF link annotation
    • http://jajisaparev.pbworks.com/w/file/fetch/144418647/google_drive_jurassic_world_fallen_kingdom_mp4.pdfIn PDF document text
    • http://garigor.pbworks.com/f/grams_to_kg_worksheet.pdfIn PDF document text
    • http://visetululiv.pbworks.com/f/stick_fight_archer_mod_apk_unlimited_money.pdfIn PDF document text
    • http://visetululiv.pbworks.com/w/file/fetch/144422265/modo_de_produccion_primitiva_caracteristicas.pdfIn PDF document text
    • http://vowujepojez.pbworks.com/f/plants_vs_zombies_2_free_download_for_android_mob.org.pdfIn PDF document text
    • http://xuruzinijub.pbworks.com/f/om_shanti_oshana_full_movie_with_english_subtitles_watch_online_free.pdfIn PDF document text
    • http://fuvesiwowegu.pbworks.com/w/file/fetch/144413505/zuma_deluxe_full_version_download_and_install_free.pdfIn PDF document text
    • http://garifukedako.pbworks.com/f/diseo_de_maquinaria_norton_4_edicion_gratis.pdfIn PDF document text
    • http://xedidovetaw.pbworks.com/f/cats_the_movie_cast_2018.pdfIn PDF document text
    • http://tazijebep.pbworks.com/f/farmhouse_coffee_table_plans_free.pdfIn PDF document text
    • http://bekivuxuga.pbworks.com/f/watch_free_full_movies_no_sign_up.pdfIn PDF document text
    • http://noxixap.pbworks.com/w/file/fetch/144426429/how_to_reset_playstation_3_network_account.pdfIn PDF document text
    • http://nilanom.pbworks.com/f/17474804342.pdfIn PDF document text
    • http://kufavuva.pbworks.com/f/glencoe_physical_science_chapter_18_review_answers.pdfIn PDF document text
    • http://lugozamuxika.pbworks.com/w/file/fetch/144411969/how_long_is_navy_dive_school.pdfIn PDF document text
    • http://supatibu.pbworks.com/f/gasuniziriju.pdfIn PDF document text

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