Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c205df85b3c5e2e…

MALICIOUS

PDF

52.1 KB Created: 2020-08-29 03:49:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4507247f033f7d5e75ac2d90d81ffeb0 SHA-1: 289e6c7fddc370c7da1bc4c7f79b19057f141279 SHA-256: 3c205df85b3c5e2ee9b05fd15489a2cedfb4ac68be32d50a75ffdd63e33080d5
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=j+aime+pas+le+sport'. This indicates the document's primary purpose is to redirect users to a potentially harmful site. Additionally, a heuristic for a PDF link farm was triggered, suggesting a broad attempt to distribute malicious links. No scripts were extracted from this sample.

Heuristics 3

  • 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 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.
  • 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://ttraff.ru/wix?keyword=j+aime+pas+le+sport
    • https://cdn.shopify.com/s/files/1/0434/7245/3797/files/45348739046.pdf
    • https://cdn.shopify.com/s/files/1/0431/0401/0389/files/dikuburowut.pdf
    • https://cdn.shopify.com/s/files/1/0434/0740/9308/files/91084969233.pdf
    • https://cdn.shopify.com/s/files/1/0433/0559/9140/files/anomaly_defenders_apk_data.pdf
    • https://cdn.shopify.com/s/files/1/0431/1816/6167/files/10603213981.pdf
    • https://cdn.shopify.com/s/files/1/0434/1088/2716/files/27379514399.pdf
    • https://static.usrfiles.com/ugd/b8c837_10a7e12eff0d436aa51fe9fcc597d09e.pdf
    • https://static.usrfiles.com/ugd/b8c837_8837bda811e84ac2887699eb6827e924.pdf
    • https://static.usrfiles.com/ugd/b8c837_823f16bd4e6a43ed96410974cb865342.pdf
    • https://static.usrfiles.com/ugd/b8c837_7ce02218c0b04519bd04a65a306c587e.pdf
    • https://cdn.shopify.com/s/files/1/0429/8814/2743/files/52428360440.pdf
    • https://cdn.shopify.com/s/files/1/0438/9126/1595/files/36931910181.pdf
    • https://cdn.shopify.com/s/files/1/0440/2901/8262/files/34906022314.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008b24.bin
2dbc23fb04fbfd338ac6bf83f46bb230733fd6034fdfabea9317ed1486953fe3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B24 4956 bytes
font_01_sfnt_off00009be0.bin
542b4f8648a04f996a8def66b4a27685a9e8786d5af5795f7f2f413e9fb3fdcc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9BE0 12232 bytes

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