Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac3d384bd9f95d27…

MALICIOUS

PDF

101.6 KB Created: 2020-12-18 00:50:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 475766c238c0496665ea4e43c0b143e2 SHA-1: c55bace8d63cb3df0c470a23c05ba4d4517d168e SHA-256: ac3d384bd9f95d27c1e8da6483bdedc7a3bbe1401a4f842f0a92040e93c84c89
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://cctraff.ru/aws?utm_term=compare+fractions+lesson+6.+7+answers'. This URL is flagged as malicious and is the primary indicator of malicious intent. The ML classifier also strongly flagged the PDF as malicious. No scripts were extracted, but the embedded URL is sufficient evidence of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8953

Heuristics 3

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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/aws?utm_term=compare+fractions+lesson+6.+7+answers In PDF document text
    • https://static1.squarespace.com/static/5fcf22af84361f7a2d9f336e/t/5fd74dbd5b1f6f7539f30711/1607945661702/call_of_duty_mobile_minimum_requirements_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b616c8e4-ec3f-4849-8b41-c3fa87a2cedb/29958055236.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8bfe7b59-7607-4ebc-bd83-a255a7a5ab77/zodejore.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70571a90-f237-430e-a772-fa5fdd3e2e9b/stick_figure_killing_games.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/520802fa-bf29-4337-9513-6d8854cc1da6/24453864099.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf6c8aeaf37e3b64946436/1606380684078/65260770580.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea9e01cc-1790-451e-a649-0870a3e69116/2006_scion_tc_owners_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/880d5be3-565d-4278-81d3-061b19b863b0/77844272936.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc30fa5bda9c57a97cc46e9/t/5fc3dd6f3570fb44d179a31c/1606671728107/principles_of_transportation_engineering_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/deb904e8-826f-4b79-86cc-559c74438453/zagun.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc13b47c14dfd36fef3b64a/t/5fc843132dd5737571ae0c71/1606959893172/best_caption_for_fb_pic_with_friends.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc7925ca4492a057e243d95/t/5fd6381f5b1f6f7539d18c68/1607874595060/kupipadumujenevad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b17d9919-7dde-49aa-a633-7d8b4843de43/37740841740.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc56ff188c99b6d37c5dc1c/t/5fc694bb2dd96f5918d34cb6/1606849724587/politics_and_prose_youtube.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0fd5976-ff01-4515-8f0d-70a92d34f479/california_real_estate_principles_9th_edition.pdfIn PDF document text

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