Malicious PDF — malware analysis report

Static analysis result for SHA-256 56bc0c08084ccb31…

MALICIOUS

PDF

64.0 KB Created: 2021-03-09 00:47:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: c8f53d9f90d45a5635fbcba106a440e5 SHA-1: a4b4dc097676dc34dffe5764a3f45782f7af64b5 SHA-256: 56bc0c08084ccb31aa958627b13bce7305e6263ecd841b33194c31d3c6f31a87
184 Risk Score

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 0.9618

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://druttle.ru/award?keyword=energia+hidrostatica+pdf PDF link annotation
    • https://niwanuve.weebly.com/uploads/1/3/1/4/131406473/vewupasajeziliguzi.pdfIn PDF document text
    • https://cdn.sqhk.co/ferobisuw/jhfZgh7/star_wars_x_adidas_nmd_r1_pk_stormtrooper.pdfIn PDF document text
    • https://dadikokaw.weebly.com/uploads/1/3/5/3/135347495/kuzemoxab.pdfIn PDF document text
    • https://cdn.sqhk.co/fedovipawe/NShiBib/world_of_bingo_credits_generator.pdfIn PDF document text
    • https://wisapemewe.weebly.com/uploads/1/3/4/7/134713478/sanise.pdfIn PDF document text
    • https://jokiputukalak.weebly.com/uploads/1/3/1/1/131164130/savexagewe-wuromevavo-zoradeva.pdfIn PDF document text
    • https://2a983b51-2e13-4971-8c1f-a5bca3ab4353.filesusr.com/ugd/e1a791_1f7ca80260b64fad95217b2d76af949b.pdf?index=trueIn PDF document text
    • https://8d67285a-e3c5-4820-bb1a-bb91ce1079a6.filesusr.com/ugd/d54300_60c11a44a34c47e8b7632b92aa049096.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gelawiweza/fogovafevu.pdfIn PDF document text
    • https://ba789de2-c385-43ee-b32d-a34c698d1993.filesusr.com/ugd/b7082a_e9793bcd47fb452699874c96f5aa9a9d.pdf?index=trueIn PDF document text
    • https://9849c7ec-8b19-4b81-9a64-db2537ea7c40.filesusr.com/ugd/97b1c0_c64deca8ea8a40038cc723baa82f85e0.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fujadabez/how_to_stop_system_update_in_motorola.pdfIn PDF document text
    • https://45e41439-46a4-4c97-84f0-155cfeda4cef.filesusr.com/ugd/9d7ad9_97cf27b1e19840a79ead456126c7e478.pdf?index=trueIn PDF document text
    • https://19e6fc83-c281-4d06-93fd-e8b16a02b90a.filesusr.com/ugd/ce5d00_3a86eaafbaf94cf48f804a424cd204f8.pdf?index=trueIn PDF document text
    • https://2b08c346-38d8-4763-b559-bb9d4fff2313.filesusr.com/ugd/40c9d6_af7da94233bf4d18b87173f1c43874a9.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/befafuni/arcsight_smart_connector_supported_platforms.pdfIn PDF document text
    • https://75e6d08a-b14f-4c2c-bd4e-3e6431d9d11c.filesusr.com/ugd/497a87_8d1e922f95cb41c69179894ac52142f6.pdf?index=trueIn PDF document text
    • https://50fe66f1-00be-429c-ab6c-57a9f80d6ab9.filesusr.com/ugd/39cb9d_a65b9168720141e196942eb15bcf3864.pdf?index=trueIn PDF document text
    • https://9387bd13-3746-4408-b474-2867f26e464d.filesusr.com/ugd/ace02d_b3c4d5dd4e694917aa5ae4e9e11d070d.pdf?index=trueIn PDF document text

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