Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce238fd8ebf86117…

MALICIOUS

PDF

35.6 KB Created: 2020-10-02 07:45:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 734d5cd65631818cf0f3202456de72f7 SHA-1: 4bf635c028e415962511c590422f6a75339997a0 SHA-256: ce238fd8ebf8611760fdc1c0bb00c8c27dcf3c5c5d85b8f43b6b0f7a0e3124eb
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL, 'https://cctraff.ru/strik?keyword=classical+and+statistical+thermodynamics+carter+pdf', is the primary indicator of malicious intent. While no scripts were extracted, the PDF structure and the malicious URL strongly suggest a phishing or redirection attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 2

  • 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.
  • 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://cctraff.ru/strik?keyword=classical+and+statistical+thermodynamics+carter+pdf
    • https://site-1036734.mozfiles.com/files/1036734/4258236217.pdf
    • https://site-1037882.mozfiles.com/files/1037882/86776149183.pdf
    • http://files.andridgesoundhealing.com/uploads/1/3/1/4/131408928/5965160.pdf
    • http://files.flygirrl.com/uploads/1/3/0/7/130739732/fepuzedi.pdf
    • http://files.mrsstoebe.com/uploads/1/3/0/8/130874398/7359565.pdf
    • https://uploads.strikinglycdn.com/files/b6b36c22-cc4a-47dc-9fdb-e66f83299289/42781292817.pdf
    • https://uploads.strikinglycdn.com/files/3c99f145-7f60-4c81-b8c1-12450cf09118/figidizuradiru.pdf
    • https://uploads.strikinglycdn.com/files/920fdc5f-5ee8-485a-98b4-34636a403eb0/86806398616.pdf
    • https://uploads.strikinglycdn.com/files/1f38436c-4f95-4402-a72d-6761c517d3a0/fosaposekepawetisabipi.pdf
    • https://uploads.strikinglycdn.com/files/e704d48f-58ce-4e99-91ee-d3fd415e12fb/52557366465.pdf
    • https://cdn.shopify.com/s/files/1/0476/9559/3638/files/73036805279.pdf
    • https://cdn.shopify.com/s/files/1/0432/2089/3864/files/4115227873.pdf
    • https://cdn.shopify.com/s/files/1/0432/1745/3211/files/gutowujixiz.pdf
    • https://cdn.shopify.com/s/files/1/0429/5072/1699/files/juvirinabupopanasikopud.pdf

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