Malicious PDF — malware analysis report

Static analysis result for SHA-256 09d637adccf247a9…

MALICIOUS

PDF

16.6 KB Created: 2020-10-28 19:17:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c03f4813d301da8d10d3e7eb98cfa4dc SHA-1: 329272aca79e6238e40ac4a332b1f4abd95c86b6 SHA-256: 09d637adccf247a9b09c61c89c4d43bf22797958ff5580a1ef91380b7ac40ac5
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ggtraff.ru'. The document body, though heavily obfuscated, contains this same URL, suggesting it is the primary lure. The ML classifier also flagged this PDF as malicious. The presence of embedded URLs and the nature of the redirector indicate an attempt to lead the user to a malicious site, likely for phishing or further malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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://ggtraff.ru/aws?keyword=fractions+on+a+number+line+worksheet+pdf
    • https://cdn-cms.f-static.net/uploads/4393179/normal_5f923a4d4f21b.pdf
    • https://cdn-cms.f-static.net/uploads/4389571/normal_5f973e9a3adcc.pdf
    • https://tadafami.weebly.com/uploads/1/3/4/3/134386911/bafa761750e9.pdf
    • https://cdn-cms.f-static.net/uploads/4369663/normal_5f947a2174dcd.pdf
    • https://firerokuk.weebly.com/uploads/1/3/1/1/131164187/tibitume.pdf
    • https://kixatefibav.weebly.com/uploads/1/3/0/7/130776592/4877804.pdf
    • https://noxepelobisuse.weebly.com/uploads/1/3/1/8/131871648/modup_jajagil.pdf
    • https://cdn.shopify.com/s/files/1/0502/4746/7163/files/mamizeluz.pdf
    • https://s3.amazonaws.com/forupokisip/acop_sss.pdf
    • https://cdn.shopify.com/s/files/1/0432/3357/5075/files/83907920316.pdf
    • https://uploads.strikinglycdn.com/files/74f05943-5115-4d18-ac99-124f9a0cf0ea/letabusik.pdf
    • https://cdn.shopify.com/s/files/1/0499/7156/0616/files/centos_commands_with_examples.pdf
    • https://uploads.strikinglycdn.com/files/8c8bbf94-f900-484a-8e48-dac74e804464/depefafelawazipidob.pdf

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