Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3aea61d9f4d18c9…

MALICIOUS

PDF

42.2 KB Created: 2020-12-16 20:41:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 0934ded310334a0aaaa1983d522440ae SHA-1: 943ce588f2194e13fc4c89e5f569a0bf0976c07b SHA-256: e3aea61d9f4d18c9546cbaf9db6d524b82f6bc29d872bc2861bb0eb366a05a0f
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 0.6184

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://traffine.ru/strik?utm_term=al+anon+phone+meetings+near+me PDF link annotation
    • https://gegivibubijob.weebly.com/uploads/1/3/4/5/134507206/c6035e1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462096/normal_5fbcebd8932f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383704/normal_5fbd041bc947f.pdfIn PDF document text
    • https://jodiwovuf.weebly.com/uploads/1/3/4/3/134368652/2623e0ad8.pdfIn PDF document text
    • https://pixumoxijabana.weebly.com/uploads/1/3/4/7/134748481/50dfae6.pdfIn PDF document text
    • https://kavivapepegag.weebly.com/uploads/1/3/4/2/134235540/kexewasabefakamakoti.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374700/normal_5fc800e82a833.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366327/normal_5f8de2a839f3f.pdfIn PDF document text
    • https://jarosebat.weebly.com/uploads/1/3/4/6/134695718/9db6b3f7da925.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5c5aef7cf8c75404c2941/t/5fca9702fb11e56e64358201/1607112450467/my_pillow_towels_reviews.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc10966a879396864091016/t/5fc1200f1972c46e3cc677a0/1606492176021/39090730970.pdfIn PDF document text

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