Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea97d413a95484cb…

MALICIOUS

PDF

53.5 KB Created: 2021-02-24 17:26:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: ad63e9ea6930a6b69e40f13af62253f5 SHA-1: 5ac3082295a99d00165ee995bb49550d4192dd48 SHA-256: ea97d413a95484cbfe6302c05645397b9f428736713a53ccbeabbc98acd23dd5
182 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to a known malicious domain, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML_NYX_PDF_MALICIOUS and CLAMAV_DETECTION heuristics further confirm the malicious nature of the file. The primary attack vector appears to be luring the user to click on a malicious link, likely for phishing or to download a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6858

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/strik?utm_term=cirque+du+freak+film+review In PDF document text
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    • https://cdn-cms.f-static.net/uploads/4379852/normal_6009cf7626ec1.pdfIn PDF document text
    • http://lizoguxumugef.mywebcommunity.org/vinland_saga_volume_12_release_date.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418013/normal_5ff509485aeb8.pdfIn PDF document text
    • http://tidedejix.iblogger.org/81617543284.pdfIn PDF document text
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    • https://cdn-cms.f-static.net/uploads/4407304/normal_5fd65f27f2f61.pdfIn PDF document text
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    • https://static.s123-cdn-static.com/uploads/4460723/normal_5fc991535ccee.pdfIn PDF document text
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