Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ea51c031ca228a9…

MALICIOUS

PDF

41.8 KB Created: 2020-12-17 16:49:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 5da9238b10cab7d22b62bbeaba2abcf8 SHA-1: 60df997de9e0af3135597cdef0a6365a900133e7 SHA-256: 0ea51c031ca228a9a88323733b43eb9006409cc6e3cb0d2c9ac4d94b9344b25d
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs, with one specifically targeting 'santa cruz county property tax due dates' and leading to a suspicious domain. Heuristics indicate this PDF is a link farm on disposable hosting, and ML classifiers and ClamAV strongly flag it as malicious. While no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to redirect users to malicious sites for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9297

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 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://trafftec.ru/strik?utm_term=santa+cruz+county+property+tax+due+dates PDF link annotation
    • https://revamimetanezoj.weebly.com/uploads/1/3/4/5/134597499/pewonit-minitozeg-sawuw-xekatu.pdfIn PDF document text
    • https://jazaxalik.weebly.com/uploads/1/3/4/4/134488577/jidagerozefi-misuki.pdfIn PDF document text
    • https://dirizosak.weebly.com/uploads/1/3/4/5/134509825/3152386.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377414/normal_5f92347f94bac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380692/normal_5f8d8767e4264.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384316/normal_5fca2e08129e3.pdfIn PDF document text
    • https://pebenari.weebly.com/uploads/1/3/4/5/134518206/9905940.pdfIn PDF document text
    • https://jamakebowixon.weebly.com/uploads/1/3/4/4/134477175/8ba4e.pdfIn PDF document text
    • https://fukagopesuzidad.weebly.com/uploads/1/3/1/3/131381553/aa7db300.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449788/normal_5fb2bcfe487fb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8296e65d-2eb6-45ca-9108-231abfd9d934/12423607525.pdfIn PDF document text
    • https://s3.amazonaws.com/gedimuta/absent_warning_letter_format.pdfIn PDF document text
    • https://s3.amazonaws.com/jarirotexab/nowibigewuxuzowomagupi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a31925b7-e7fb-49c8-bbf3-ddbf9bb7d7a3/ruraganogapelusumimono.pdfIn PDF document text

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