Malicious PDF — malware analysis report

Static analysis result for SHA-256 12dbfa16b7a6d603…

MALICIOUS

PDF

57.2 KB Created: 2021-06-01 12:53:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8b2e0d00c7bbe5e831b754a57f880b4b SHA-1: b60e07cc2786ae3de0d5ee41e4d557e4406af8b6 SHA-256: 12dbfa16b7a6d60385e42afc7714a5d577f73a0d594f50b0e4f21711ec2d4fd5
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous external links, many of which point to disposable hosting and are part of a link farm, indicating a phishing or redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing lure, likely leading to a malicious payload or credential harvesting site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7127

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://medvor.ru/pbw?utm_term=planisferio+con+nombres+y+divisi%25C3%25B3n+pol%25C3%25ADtica+para+imprimir+pdf
    • https://cdn-cms.f-static.net/uploads/4420025/normal_5fd61a97e041c.pdf
    • https://static.s123-cdn-static.com/uploads/4498978/normal_5ffac2babc708.pdf
    • https://static.s123-cdn-static.com/uploads/4450721/normal_5ff44bfa74e77.pdf
    • https://static.s123-cdn-static.com/uploads/4490949/normal_5ff5cafd2a449.pdf
    • https://static.s123-cdn-static.com/uploads/4413375/normal_5fe3e9e09e298.pdf
    • https://cdn-cms.f-static.net/uploads/4484806/normal_5fe9fb2c206c0.pdf
    • http://lekuzax.pbworks.com/w/file/fetch/144412233/14956861975.pdf
    • http://lekipirunezi.pbworks.com/w/file/fetch/144414789/how_long_does_it_take_to_get_a_green_belt_in_six_sigma.pdf
    • http://garigor.pbworks.com/w/file/fetch/144425124/95684169747.pdf
    • http://siruzosu.pbworks.com/w/file/fetch/144446004/iphone_a1332_emc_380b_bcg-e2380b_579c-e2380b.pdf
    • http://lakebimutep.pbworks.com/w/file/fetch/144417756/how_to_know_what_size_your_gucci_belt_is.pdf
    • http://pamotekegopa.pbworks.com/f/statistics_final_exam_questions_and_answers.pdf
    • https://uploads.strikinglycdn.com/files/9ecc46bf-3659-47d2-bf0f-0a6233483490/41000806086.pdf
    • http://lugozamuxika.pbworks.com/w/file/fetch/144416682/7512241316.pdf
    • https://uploads.strikinglycdn.com/files/c6e85be3-c06f-474d-a8a7-18ecc17cbf6f/69017797252.pdf
    • https://uploads.strikinglycdn.com/files/a1ed215c-737d-4d8f-9228-e467adafc31a/28289295643.pdf
    • http://nigezid.pbworks.com/f/jivomirex.pdf
    • http://banusiv.pbworks.com/w/file/fetch/144443013/andy_app_player_64_bit_download.pdf
    • http://negovijalulu.pbworks.com/w/file/fetch/144419070/77559390916.pdf
    • http://wojipag.pbworks.com/f/maziriwenu.pdf
    • http://xawaren.pbworks.com/f/ferivatagurova.pdf
    • https://uploads.strikinglycdn.com/files/bb362e28-af67-4942-801e-f10f10000054/99122005400.pdf
    • http://xosufixemuf.pbworks.com/f/convertir_un_archivo_de_word_a_online_gratis.pdf
    • http://vugufosenene.pbworks.com/f/unconventional_machining_process_mcq_download.pdf