Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0f1142a90748e74…

MALICIOUS

PDF

41.2 KB Created: 2020-08-23 13:08:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ff5f601db0c7bb9bcd0effdfd484ab41 SHA-1: 76306fac1e8c149fba6ef14af1f3cbcaa91e4507 SHA-256: e0f1142a90748e746286cfc8adf00215a573176289446d39809b5f4b17942033
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with a critical heuristic firing indicating a link farm designed to redirect users. One prominent URL, 'https://ttraff.ru/pify?keyword=dunkin+donuts+receipt+template', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'Dunkin donuts receipt template' and the wkhtmltopdf tool, suggesting a social engineering lure. The presence of numerous Shopify-hosted PDF links, while mostly benign, serves to obscure the malicious redirector among legitimate-looking 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.ru/pify?keyword=dunkin+donuts+receipt+template
    • http://pomoram.ifobookmarks.org/uploads/1/3/2/7/132712593/fc6c55bd4.pdf
    • http://sesutun.narrativeimaginings.com/uploads/1/3/1/8/131871780/wopeve.pdf
    • https://cdn.shopify.com/s/files/1/0435/3051/8682/files/47591732730.pdf
    • https://cdn.shopify.com/s/files/1/0433/9525/2374/files/gebonuwafije.pdf
    • https://cdn.shopify.com/s/files/1/0432/8249/7701/files/wafot.pdf
    • https://cdn.shopify.com/s/files/1/0437/9725/0210/files/predator_228_manual.pdf
    • https://cdn.shopify.com/s/files/1/0435/0682/7428/files/23891092002.pdf
    • https://cdn.shopify.com/s/files/1/0435/4798/4027/files/scholastic_aptitude_test_practice.pdf
    • https://cdn.shopify.com/s/files/1/0440/0414/7350/files/tokulidurifofimoxigufuwot.pdf
    • https://cdn.shopify.com/s/files/1/0437/7945/7175/files/xivajoxaro.pdf
    • https://cdn.shopify.com/s/files/1/0431/0204/4316/files/31164159672.pdf
    • https://cdn.shopify.com/s/files/1/0432/6978/3720/files/alimentos_con_fibra_dietetica.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_off00006392.bin
6bbe79ab7770e8bc9ea47b041ad06e07a883899bb69081a6d88eb537f7994ba3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6392 5280 bytes
font_01_sfnt_off00007572.bin
e2736034417482ad2bfb1cd7aded044d418952e6b5d1d869b1054e31cdcd23ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7572 10204 bytes

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