Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ee669ed943ebaa2…

MALICIOUS

PDF

81.0 KB Created: 2020-11-18 18:40:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 5bd21b4eba9facbf6485b18085168182 SHA-1: 508ff8eeabf510acc2734fdeb21a028deb2c5cd0 SHA-256: 8ee669ed943ebaa21cb78f126c4797772296cb834c0d15ebb1746abe3e3db563
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

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 0.9456

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 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/strik?utm_term=tablas+de+vapor+sobrecalentado+del+r22 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4446784/normal_5fafa15c03262.pdfIn PDF document text
    • https://vunixumo.weebly.com/uploads/1/3/1/4/131453253/3ac78b13b13.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403948/normal_5fa58c681afd4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387706/normal_5f934d95842ab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385413/normal_5fa6f1cc4b715.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9410ad51-68e3-4f04-87e6-72adb258e11b/suxer.pdfIn PDF document text
    • https://s3.amazonaws.com/midaguvimabof/what_bonds_are_amino_acids_joined_together_by.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45f509c3-21b9-4600-82d0-2f1041f7462f/cpc_practical_application_workbook_answers_2016.pdfIn PDF document text
    • https://s3.amazonaws.com/bomupi/inventory_spreadsheet_ideas.pdfIn PDF document text
    • https://s3.amazonaws.com/mutirexa/stuart_diamond_getting_more.pdfIn PDF document text
    • https://s3.amazonaws.com/begijufadi/solve_by_elimination_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/busutafitufe/words_starting_with_chap.pdfIn PDF document text

Related samples 5

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