Malicious PDF — malware analysis report

Static analysis result for SHA-256 233d435cffd363fc…

MALICIOUS

PDF

43.1 KB Created: 2020-08-31 06:22:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 739607877330692f83d9927321c19c64 SHA-1: c9bf2db665444691d14fa1e03beb41451f5120ce SHA-256: 233d435cffd363fcbee5d40a9c914716e52e7b7138eb7a65375c9d51167edb0f
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=citizen+eco+drive+g900+battery+replacement'. This URL is likely part of a phishing or scam campaign designed to redirect users to malicious content. The document also contains a large number of embedded links, many of which point to 'static.usrfiles.com', suggesting a link farm or SEO poisoning tactic to improve search engine ranking for the malicious 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/wix?keyword=citizen+eco+drive+g900+battery+replacement
    • https://static.usrfiles.com/ugd/83d902_e647bc7238ac41e18ea9d74322910e8c.pdf
    • https://static.usrfiles.com/ugd/f8de3e_bb4c5fd52b80410eac5414c44782d1bc.pdf
    • https://static.usrfiles.com/ugd/b8c837_dccc252bc9b54ef0aefd27ea420dbcd8.pdf
    • https://static.usrfiles.com/ugd/b8c837_1d8c67967e934c16be67fbfbc3b00398.pdf
    • https://static.usrfiles.com/ugd/e32576_67572dd3bf0e4f31bd06212b3fae98e8.pdf
    • https://static.usrfiles.com/ugd/c75f60_2cf9b395e2834595937c15e5fb8c2362.pdf
    • https://static.usrfiles.com/ugd/1be480_5decf50b91cf4274a3a1f6bfbb76dddd.pdf
    • https://static.usrfiles.com/ugd/b8c837_c6de522c080f4975b8f253594b0f6570.pdf
    • https://static.usrfiles.com/ugd/b8c837_b59b1d8d819844ac988511e86a987417.pdf
    • https://static.usrfiles.com/ugd/b8c837_8674ca55ab884b7881aba10e2e0f5705.pdf
    • https://static.usrfiles.com/ugd/b8c837_f0ec26aa718448389c47cdf6d60a2cb4.pdf
    • https://cdn.shopify.com/s/files/1/0431/8763/4338/files/safatidofirajizegi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5434/2042/files/18930294184.pdf
    • https://cdn.shopify.com/s/files/1/0433/9790/6589/files/dream_a_little_dream_of_me_piano.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/95509007145.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_off00006715.bin
d6aa9519c96390db42969087d2f040b057381291fc2e277c64c3b79d9eda3e51		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6715 5768 bytes
font_01_sfnt_off00007aaf.bin
5e37f6687c31d5a37dd983ac91253a3e92d650394e3c66d7c8a2cd1ea3f224b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AAF 10776 bytes

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