Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e968a18719ff97c…

MALICIOUS

PDF

44.9 KB Created: 2021-03-27 17:16:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 0ee97c9e2a2e2686035e61fce03270be SHA-1: f261eb1edd39d5367ba3022a7caa41f5c458f05a SHA-256: 7e968a18719ff97c922931adbe0a0c0fd901fd2ff195240bf8989f8fa507d3de
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains numerous embedded URLs, with one specifically pointing to a suspicious domain ('botokaw.ru') that appears to be part of a link farm designed to redirect users. The document body, though partially corrupted, suggests a lure related to medical information ('Varicela zoster en ni os. pdf'), likely to trick users into visiting the malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7880

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://botokaw.ru/award?keyword=varicela+zoster+en+ni%25C3%25B1os.+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4388426/normal_601e4d787b624.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484993/normal_605b866647667.pdfIn PDF document text
    • http://xevusezes.medianewsonline.com/ammeter_voltmeter_wattmeter.pdfIn PDF document text
    • http://zibikudupe.mywebcommunity.org/61907323403.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365586/normal_600460b7b43cd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376870/normal_5fe853bb3e789.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378161/normal_600dfcbb3f07d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465719/normal_605dc5ba247fc.pdfIn PDF document text
    • http://jujobope.atwebpages.com/dimijisuxabixex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1a14c75-c9bc-4bf8-8c6a-314fd685c9a1/mukuzar.pdfIn PDF document text
    • http://wevujonixusenex.rf.gd/rebuild_data_mart_management_reporter_ax_2012.pdfIn PDF document text
    • https://s3.amazonaws.com/sefabe/57201315452.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18b7ee43-6488-4022-83a8-84165653e6e2/fixujalegevezakolejegefav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a1fe1ec-058d-4075-8de3-5ce2711982a2/can_you_delete_ntuser_dat_files.pdfIn PDF document text
    • https://s3.amazonaws.com/tejuvonixag/lijuxakujozi.pdfIn PDF document text
    • http://kowesodi.rf.gd/admission_form_format_for_coaching_classes.pdfIn PDF document text
    • https://s3.amazonaws.com/midaguvimabof/microbiology_experiments_and_lab_techniques.pdfIn PDF document text
    • http://nogogesusuwebob.epizy.com/nusunibabojibuxijagod.pdfIn PDF document text
    • http://puwomuf.rf.gd/7681226723.pdfIn PDF document text
    • http://gurepabe.epizy.com/answers_for_fire_breathers_fallout_76.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40593ce2-9b2d-4537-ab8f-7a5e31a883c6/shark_euro_pro_x_sewing_machine_9110.pdfIn PDF document text
    • http://lojibovel.myartsonline.com/antilogarithm_download.pdfIn PDF document text
    • https://s3.amazonaws.com/pizexopenaxu/transformar_de_binario_a_decimal_en_matlab.pdfIn PDF document text