Malicious PDF — malware analysis report

Static analysis result for SHA-256 6889a1acbfbb4b28…

MALICIOUS

PDF

64.0 KB Created: 2021-03-17 18:19:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: c39c8b506cc71068a30bc0627d8be0c4 SHA-1: 6a37145535f3aec30a74b575b739864504d05b60 SHA-256: 6889a1acbfbb4b282c18b9997daa36477383de9ba89cc10e56fc9b21839ba17e
184 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 0.8245

Heuristics 5

  • 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 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://nipisod.ru/award?keyword=early+christian+and+byzantine+art+john+lowden+pdf PDF link annotation
    • https://xanerenidijuv.weebly.com/uploads/1/3/0/7/130739333/52def0.pdfIn PDF document text
    • http://benodemutuvi.22web.org/what_size_is_a_29_30_in_jeans.pdfIn PDF document text
    • https://muneberixiloza.weebly.com/uploads/1/3/4/3/134339704/vigukiwaxajuru.pdfIn PDF document text
    • https://xolovimuwoza.weebly.com/uploads/1/3/4/8/134865524/woxuxef.pdfIn PDF document text
    • https://lipuxavevafip.weebly.com/uploads/1/3/1/3/131398459/5215647.pdfIn PDF document text
    • https://manabuvajej.weebly.com/uploads/1/3/4/8/134847277/butawivedefefo.pdfIn PDF document text
    • https://leresidatebij.weebly.com/uploads/1/3/0/7/130776374/totiralokonupilug.pdfIn PDF document text
    • https://fokurojisek.weebly.com/uploads/1/3/1/4/131438639/1410628.pdfIn PDF document text
    • https://33b7cf8b-1cb2-46d9-9063-17e97cba5e80.filesusr.com/ugd/9edd50_26aeb9e5d7bb4b58a612d2ba631cf86f.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/77952691-130f-4ecb-96bb-d06740bb7900/roland_spd_sx_vs_spd_sx_special_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b2f1689-f63d-454a-adc6-890eb1c9d0b6/24519399871.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46964f01-9bc3-4de8-afe5-ea89ed3cd329/73450192913.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10d0bece-63b5-453b-bc58-05131ea0b4c7/lekabamimakibexomu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3e39355-7f7c-4ee8-b640-c8728f6c9cfb/story_of_o_book_download.pdfIn PDF document text
    • https://436010f1-0dd7-4950-aec0-3bdf337573e8.filesusr.com/ugd/5a4c69_cb79cc7558774d8fb439dde0ee6a2f3c.pdf?index=trueIn PDF document text
    • http://nanesipub.rf.gd/jikidemod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e822343-9469-401b-93eb-2f7fbd8e7a24/karcher_pressure_washer_hose_keeps_coming_off.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb4eed12-8aaf-4818-ae35-310bc27a4bab/fuzokigalubapagagibiziti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b2a3e79-2c3b-46e9-b637-bb96eef9d6d2/34927145136.pdfIn PDF document text
    • https://80b2a579-f9ed-4aa0-b91a-ac3c8973c086.filesusr.com/ugd/353d00_564ef52bc7344807aee95509a22843d4.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/c560acaa-1d8b-4cbe-b293-4e1f17fcf637/38785222998.pdfIn PDF document text
    • https://33edd578-4186-4695-89f3-f56a5a23fc53.filesusr.com/ugd/f17c08_3231c4c7e7de4df1bf9344640749c54d.pdf?index=trueIn PDF document text
    • https://48b7024d-7414-4593-b44d-ed892b96ad15.filesusr.com/ugd/3e5db3_520fa8316a0944a182c55fa6ce0bf926.pdf?index=trueIn PDF document text
    • http://wewabegig.rf.gd/30441044874.pdfIn PDF document text

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