Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb362b2e42da5556…

MALICIOUS

PDF

34.1 KB Created: 2020-08-13 04:24:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f20e5db5c41ea75de84ecc419b9c42da SHA-1: 4b73b4f85397d2945a2e623e3ac7f9ee9e2e6309 SHA-256: eb362b2e42da5556cec9d91b4334e63033e4e0fcd5b2ef0e4f0e746292fc3d78
130 Risk Score

Malware Insights

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

The PDF file contains a link farm, with many links pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body contains text related to financial accounting and invoice lures, aligning with the 'SE_INVOICE_LURE' heuristic. The primary malicious URL identified is https://ttraff.com/pify?keyword=financial+accounting+previous+question+papers+pdf, which is likely used to redirect the user to a further malicious destination.

Heuristics 4

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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.com/pify?keyword=financial+accounting+previous+question+papers+pdf
    • http://refisu.sbtcandles.com/uploads/1/3/1/6/131606027/893cafe197f.pdf
    • http://zunonu.val6heat.com/uploads/1/3/0/7/130775379/besezodi.pdf
    • http://files.monetaventures.com/uploads/1/3/0/7/130775940/xupebuzerakebov.pdf
    • https://cdn.shopify.com/s/files/1/0440/2744/5398/files/sweatshop_definition.pdf
    • https://cdn.shopify.com/s/files/1/0432/9809/5272/files/how_to_disable_windows_update.pdf
    • https://cdn.shopify.com/s/files/1/0435/9582/5320/files/fundamentos_psicolgicos_da_educao.pdf
    • https://cdn.shopify.com/s/files/1/0436/1197/9939/files/7th_grade_math_curriculum.pdf
    • https://cdn.shopify.com/s/files/1/0434/5148/2278/files/dunubekufavekewuba.pdf
    • https://cdn.shopify.com/s/files/1/0435/8835/4207/files/fundamentals_of_astrodynamics_and_applications_vallado.pdf
    • https://cdn.shopify.com/s/files/1/0430/4614/2114/files/kebinudowamibamobizaj.pdf
    • https://cdn.shopify.com/s/files/1/0430/6996/4439/files/algebraic_expressions_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0431/7318/3637/files/dujanolonep.pdf
    • https://cdn.shopify.com/s/files/1/0428/1974/8006/files/bevasezuwi.pdf
    • https://cdn.shopify.com/s/files/1/0447/5568/1431/files/bison_the_yacc_compatible_parser_generator.pdf
    • https://cdn.shopify.com/s/files/1/0431/2439/2093/files/18660199832.pdf
    • https://cdn.shopify.com/s/files/1/0427/8157/3279/files/15244949166.pdf
    • https://cdn.shopify.com/s/files/1/0431/8471/7979/files/7082674752.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_off000047d7.bin
d5db292aaca80b8057bf4ec0dd4720652c3869c5cf038f1ebb2de6931d03c069
pdf-font-stream PDF embedded font (sfnt) at offset 0x47D7 5464 bytes
font_01_sfnt_off00005a75.bin
a85342de25aa9dffcd81054a831e2efc7b3e9bebf73a29057d9356df571a0f51
pdf-font-stream PDF embedded font (sfnt) at offset 0x5A75 9616 bytes