Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0d8a7acfd0bcb2a…

MALICIOUS

PDF

43.5 KB Created: 2020-08-14 17:32:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 547d97f7de9df2003b5fd5807ba93cb6 SHA-1: 0ac6750412b462cdef2950aead5fd448767c3761 SHA-256: d0d8a7acfd0bcb2ad5cf29a8d26ec69d041472d7996b7daaef8926a84fb27ec6
120 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'shingles vaccine cdc guidelines' and the malicious URL. This suggests a phishing attempt to redirect users to malicious content under the guise of providing health information.

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.cc/pify?keyword=shingles+vaccine+cdc+guidelines
    • http://files.dimcpphotography.com/uploads/1/3/2/6/132681194/6f6f10a.pdf
    • https://cdn.shopify.com/s/files/1/0432/2630/0577/files/radadefevafise.pdf
    • https://cdn.shopify.com/s/files/1/0454/3532/2526/files/e_learning_management_system.pdf
    • https://cdn.shopify.com/s/files/1/0431/8868/2915/files/961900536.pdf
    • https://cdn.shopify.com/s/files/1/0433/5858/4986/files/aristteles._tica__nicmaco.pdf
    • https://cdn.shopify.com/s/files/1/0435/8055/5419/files/94998448985.pdf
    • https://cdn.shopify.com/s/files/1/0431/6004/3682/files/27827388650.pdf
    • https://cdn.shopify.com/s/files/1/0432/2213/9041/files/89423811530.pdf
    • https://cdn.shopify.com/s/files/1/0432/1673/2320/files/69096774558.pdf
    • https://cdn.shopify.com/s/files/1/0436/7400/9753/files/markdown_syntax_github.pdf
    • https://cdn.shopify.com/s/files/1/0428/2017/3983/files/acca_f2_notes_2020.pdf
    • https://cdn.shopify.com/s/files/1/0433/6533/5208/files/finivolajuz.pdf
    • https://cdn.shopify.com/s/files/1/0440/6706/1910/files/perfiles_de_aluminio_para_puertas_y_ventanas.pdf
    • https://cdn.shopify.com/s/files/1/0431/6889/1040/files/dosepekuxel.pdf
    • https://cdn.shopify.com/s/files/1/0430/7773/0464/files/38241680045.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_off00006a72.bin
3031a2beeba2faeb6c056ad47febf76283a0e3a4695a8a30c77084a4a2eb2fb8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A72 5268 bytes
font_01_sfnt_off00007c55.bin
2461a86b182e43b2d1dc7702025215ad4c5d7fc73b218c9dc53d85253436795e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C55 11236 bytes

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