Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4e211b7a5cb130e…

MALICIOUS

PDF

33.9 KB Created: 2020-08-20 13:01:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ba56ea24272d47e56a6864364d111b2 SHA-1: 1d78f8ee02246572239c329a130a5dd12c515709 SHA-256: e4e211b7a5cb130e890a2eed4d95d76b3e7be02b4a01c64a70306c72d2c48040
120 Risk Score

Malware Insights

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

The PDF file contains numerous links, including one pointing to a known malicious redirector at 'https://ttraff.ru/pify?keyword=symbolic+interactionism+book+pdf'. This redirector likely serves to obscure the final malicious destination. The document body, though heavily obfuscated, contains references to academic content and the malicious URL, suggesting a lure to trick users into clicking the link. The presence of multiple Shopify links, while some are benign, contributes to a link farm pattern.

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/pify?keyword=symbolic+interactionism+book+pdf
    • http://files.equineofficesolutions.com/uploads/1/3/1/4/131408664/4372916.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/garul.pdf
    • https://cdn.shopify.com/s/files/1/0448/3717/5456/files/todus.pdf
    • https://cdn.shopify.com/s/files/1/0432/9318/0070/files/bajrang_dal_dj_song_free.pdf
    • https://cdn.shopify.com/s/files/1/0436/7020/8662/files/maxemasotamafurapowuk.pdf
    • https://cdn.shopify.com/s/files/1/0439/2330/8712/files/66218511424.pdf
    • https://cdn.shopify.com/s/files/1/0440/7384/4888/files/nigomev.pdf
    • https://cdn.shopify.com/s/files/1/0428/8066/3705/files/45437289267.pdf
    • https://cdn.shopify.com/s/files/1/0440/9743/7848/files/jevuzedoxenuzutifopija.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/38746106010.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_off00004698.bin
317a69e801fc71135c64e0d445ca3d25a2f8a2f96dc4c0165aee26932f93ecd4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4698 5712 bytes
font_01_sfnt_off000059e2.bin
55cda00c5d2642af34485c0e55d85b20951de2795dd1808ef563e366fc4a97ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59E2 9796 bytes

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