Malicious PDF — malware analysis report

Static analysis result for SHA-256 e66262a8a4615a23…

MALICIOUS

PDF

84.6 KB Created: 2020-12-24 17:21:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 4b325d4e2c4e06f91ec4774695fe16b8 SHA-1: 0c953deed827782db23681bb4c28386aa34ec97a SHA-256: e66262a8a4615a2300ce2d974749d3bd258650e79c8380e9a93603a332e87941
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, identified as a PDF_SEO_LINK_FARM heuristic, suggesting an attempt to manipulate search engine results or direct users to malicious sites. The ML classifier and ClamAV detection further support its malicious nature. While no scripts were explicitly extracted, the PDF structure and embedded URLs indicate a likely intent to redirect users to potentially harmful content or download further stages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9131

Heuristics 4

  • 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.
  • 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://traffset.ru/wb?keyword=asteroid%20belt%20distance%20from%20sun PDF link annotation
    • https://bamesejoporafuv.weebly.com/uploads/1/3/4/2/134265360/30ede842.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419193/normal_5fcf17047e88f.pdfIn PDF document text
    • https://gifaxopolipo.weebly.com/uploads/1/3/0/7/130739444/76f684ed101f270.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415292/normal_5fca2d56e2405.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389080/normal_5f8dd9b795dd9.pdfIn PDF document text
    • https://s3.amazonaws.com/viromibukoleliw/bonem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7452b5d6-1b2a-445e-b4c0-70e157c9ee7f/gcu_style_guide_apa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6047a60-9df1-4048-80c1-53041d90aad0/3306536854.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e87476ee-7ff5-4303-954a-3dee60353b0c/definicion_de_talleres_deportivos.pdfIn PDF document text
    • https://s3.amazonaws.com/pukasojalu/turnitin_status_queued_means.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50c4c06b-455f-4c15-9619-fa5989cd6dbf/rome_total_war_egypt_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0daa11a0-01d9-4553-a91a-76062081bd5b/lujaxurisikaxigodurolor.pdfIn PDF document text
    • https://s3.amazonaws.com/zikeko/banozunobaduzidojivur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1c5e72b-34fa-40de-825e-c46cac600354/literature_book_grade_10_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/mexavofezoxi/management_representation_letter_tax_audit_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/303b1af0-c802-4cdb-bd54-ef5e50852be2/frost_mage_pve_guide_8.1.pdfIn PDF document text

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