Malicious PDF — malware analysis report

Static analysis result for SHA-256 f50c6abdf73043e1…

MALICIOUS

PDF

53.3 KB Created: 2020-08-30 04:55:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 950deba8e244626e82a479a710eecb11 SHA-1: 238a5f7dfe4e58ae0e0c73dbc8282ef389478f3f SHA-256: f50c6abdf73043e1bb5bf1cf66d86445f38fe3d0bee9a1a6050276f80d06bb70
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating a link to known malicious infrastructure. Additionally, PDF_SEO_LINK_FARM indicates a mass of external PDF links, with the primary malicious URL being ttraff.me. The document body, though heavily obfuscated, contains the malicious URL, suggesting the intent is to redirect the user to potentially harmful content.

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.me/wix?keyword=va+poa+codes
    • https://cdn.shopify.com/s/files/1/0432/9390/0958/files/8_big_tabs_insertable_template.pdf
    • https://cdn.shopify.com/s/files/1/0451/4293/3657/files/walton_belshazzar_s_feast.pdf
    • https://cdn.shopify.com/s/files/1/0435/4165/9797/files/peper.pdf
    • https://cdn.shopify.com/s/files/1/0435/6577/7059/files/20906339126.pdf
    • https://static.usrfiles.com/ugd/cd79e3_f48e78e513fc4e3a80d67af22c2213a5.pdf
    • https://static.usrfiles.com/ugd/b8c837_ab07bc18150c4fd4b477c272fe6083fa.pdf
    • https://static.usrfiles.com/ugd/b8c837_4d77737b94d848dcb854940b484f6258.pdf
    • https://static.usrfiles.com/ugd/b8c837_98f4388ee5e94d30af131694b62b071d.pdf
    • https://static.usrfiles.com/ugd/b8c837_5a2b4f95692f4b54b6e802b59bb32fc5.pdf
    • https://static.usrfiles.com/ugd/b8c837_4fca2c49cc30418cb7af590b482add09.pdf
    • https://static.usrfiles.com/ugd/63d3ad_9be54850228d479684b21cc22c042ecf.pdf
    • https://static.usrfiles.com/ugd/eed56f_08b9929e241841efab3ca59c21874a6b.pdf
    • https://static.usrfiles.com/ugd/b8c837_585e8478dc684b0b9b27ade8e9e7a858.pdf
    • https://static.usrfiles.com/ugd/b8c837_07afa77f3e634e66b134aafe6a3cc6c7.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_off00009538.bin
cc4b3ca6ff168f5cafb668b2af3fcd82799aeccd312ab8391d9ac2868a10e25b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9538 4904 bytes
font_01_sfnt_off0000a5f3.bin
09199ba6db4a83070e2c87ce8f9101ef00458c8c5a78c6ab77b2a1a70eaff475		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA5F3 10260 bytes

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