Malicious PDF — malware analysis report

Static analysis result for SHA-256 c947a472633340bf…

MALICIOUS

PDF

41.6 KB Created: 2020-08-30 08:23:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 82407605608c6df73afa746eec22cbe8 SHA-1: f47d5b51bc6ccc3ff757d5a312f0cd165fa99d69 SHA-256: c947a472633340bfbbf135a29d37707a886210e28f37eaa29197b3e320f16a48
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/wix?keyword=change+endnotes+to+numbers+mac'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with the primary one being 'https://cdn.shopify.com/s/files/1/0431/5463/6949/files/rafivu.pdf'. The document body, though heavily obfuscated, contains these URLs, suggesting a social engineering attempt to direct users to malicious infrastructure.

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.com/wix?keyword=change+endnotes+to+numbers+mac
    • https://cdn.shopify.com/s/files/1/0431/5463/6949/files/rafivu.pdf
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/zadoxabikiremoj.pdf
    • https://cdn.shopify.com/s/files/1/0435/3720/3364/files/afghan_jalebi_video_pagalworld.pdf
    • https://cdn.shopify.com/s/files/1/0434/4122/5880/files/rozuvutarefola.pdf
    • https://cdn.shopify.com/s/files/1/0428/8777/4374/files/react_cross_platform_application_development_with_react_native.pdf
    • https://cdn.shopify.com/s/files/1/0435/3051/8682/files/kavuxidodusutopa.pdf
    • https://cdn.shopify.com/s/files/1/0428/7181/6358/files/41076374934.pdf
    • https://static.usrfiles.com/ugd/b8c837_5ad9b255d5cf4ba5b5ac3a68487226bd.pdf
    • https://static.usrfiles.com/ugd/09273f_fc09ee328a7d43c49ce58402da8a35e5.pdf
    • https://static.usrfiles.com/ugd/12745a_265a181528434bd78cc9a7cd70664a9f.pdf
    • https://static.usrfiles.com/ugd/b8c837_073592ebeac649b99be6b569b541cea0.pdf
    • https://static.usrfiles.com/ugd/455f95_56c59a94ed044efb9337164697ca4506.pdf
    • https://static.usrfiles.com/ugd/b8c837_90b894dfaf584e44b82e71d2bf24d862.pdf
    • https://static.usrfiles.com/ugd/ed64d2_ce574d1336204c8dadb4e1ca889e6c04.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_off000064ce.bin
67e437aa659b471ed6114ca4c7a98bde1efd66ae1cd123a0fb727b4ed688be13		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64CE 5368 bytes
font_01_sfnt_off000076d8.bin
c055af96a676fe3cd9ba314e32fb6331f3d57c5d5bdfbeb4acb844e54a31837a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76D8 10052 bytes

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