Malicious PDF — malware analysis report

Static analysis result for SHA-256 7607511a68d645af…

MALICIOUS

PDF

50.6 KB Created: 2020-12-19 18:53:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 18e65f8502c0d7f8d7c3db3ff236bb09 SHA-1: 24706e1b30f388e920da1ffd62c39bdbcb917b38 SHA-256: 7607511a68d645afb8a7dda0d084be00bf130399d7be3be33e4f3dce29d8ba38
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was identified as malicious by ClamAV and an ML classifier, indicating it's likely a phishing or malware distribution lure. It contains a large number of external links, many pointing to disposable hosting, suggesting a link farm designed to redirect users. The embedded URLs and the PDF's structure are indicative of an attempt to lead users to malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6779

Heuristics 5

  • 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.
  • 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://trafficel.ru/aws?utm_term=jupiter+financial+opportunities+fund+fact+sheet
    • https://faturigazed.weebly.com/uploads/1/3/4/8/134859690/setipuli.pdf
    • https://lidafeli.weebly.com/uploads/1/3/4/6/134683499/3196515.pdf
    • https://buwabasowo.weebly.com/uploads/1/3/4/3/134353515/1603722.pdf
    • https://cdn-cms.f-static.net/uploads/4496597/normal_5fb5e391ebac1.pdf
    • https://fomemifeju.weebly.com/uploads/1/3/4/7/134769467/7239226.pdf
    • https://zasipirowi.weebly.com/uploads/1/3/4/2/134266189/kumexuloxar.pdf
    • https://jowuxedajaris.weebly.com/uploads/1/3/4/7/134716551/3960764.pdf
    • https://cdn-cms.f-static.net/uploads/4414491/normal_5fd750b90f9e4.pdf
    • https://static1.squarespace.com/static/5fc174bfa5bc066edfa992ec/t/5fca502d2444982468bb4bba/1607094318297/33223509827.pdf
    • https://uploads.strikinglycdn.com/files/26499fb1-66e9-4dc6-a178-1059179ba1ae/31588520068.pdf
    • https://static1.squarespace.com/static/5fce91384b94e834a3a4af0a/t/5fd60c6fdca221526037fb51/1607863408140/stream_movies_online_free_apk.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd0d541491241adc47e175/1606225238317/lasefim.pdf
    • https://uploads.strikinglycdn.com/files/f94ed265-2e1e-487a-b1ca-b3afa71a4349/63023780123.pdf
    • https://uploads.strikinglycdn.com/files/2001416f-1de4-4994-9e5a-0b90e41047bf/planche_tendance_arts_appliqus.pdf

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