Malicious PDF — malware analysis report

Static analysis result for SHA-256 795ccc2b3a08eb61…

MALICIOUS

PDF

48.9 KB Created: 2021-06-08 23:26:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 205b437ada0b6011677e0027557424db SHA-1: ffdacddfb50e0979dab721f31acfd87d09729024 SHA-256: 795ccc2b3a08eb61f64971f02064df5c1b4a261268c264b10f0353b92ad1f17d
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 0.7162

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://laborke.ru/pbw?utm_term=ghd+sports+online PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4446759/normal_6066865988b4a.pdfIn PDF document text
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    • https://cdn-cms.f-static.net/uploads/4483354/normal_604cd54ae9d1b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415745/normal_5fd9e6acdf9fe.pdfIn PDF document text
    • https://xosovixa.weebly.com/uploads/1/3/4/3/134318585/wuxuvevido-duxasidurezi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418001/normal_60274b8b97c84.pdfIn PDF document text
    • https://numuxubolab.weebly.com/uploads/1/3/4/3/134382028/wupotig-wasigape-gubetoga-sifekisafa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379856/normal_5fc8d1c4bd75b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416675/normal_60653fa69959f.pdfIn PDF document text
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    • https://bejejedagaf.weebly.com/uploads/1/3/4/8/134862385/6173767.pdfIn PDF document text
    • https://nudetotiba.weebly.com/uploads/1/3/4/8/134872476/8810813.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489992/normal_604db1297e64f.pdfIn PDF document text
    • http://xovakovawup.pbworks.com/f/examenes_matematicas_6_primaria_sm.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db4e3d25-7d33-4b44-9fed-6b4ec8e6ad55/norse_mythology_loki_horse.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b24d37e-7300-4a52-abb9-e0ecfe4d1c79/zojoxofuki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed8e704c-7f81-4cc4-ad16-6cd6ed55af52/lepegesize.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/abc9f43e-ac9b-4848-a213-a1a0a6575b96/paridilepo.pdfIn PDF document text
    • http://xoxafepapesu.pbworks.com/f/sembaruthi_poove_sembaruthi_poove_ullam_alli_mp3_song_masstamilan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8468a85-b02b-4630-b2b5-859721eb6b17/laxubujubemiturafuduvo.pdfIn PDF document text
    • http://tosuvop.pbworks.com/f/2129472565.pdfIn PDF document text