Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfb43e1773f34e03…

MALICIOUS

PDF

40.6 KB Created: 2020-08-30 03:50:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e7de9e43669c42f7dfc9397a55618b6 SHA-1: 89195d22737f9ac98bdcbe2ce0955385056ceeaf SHA-256: bfb43e1773f34e03f5945cad6e97f84b9200d504341f9f51729790bc336e90c8
120 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.ru, which is disguised as a 'cjb cheat menu'. The document also contains a mass of external links, many pointing to Shopify, which is a common tactic for SEO poisoning or link farming. The primary malicious URL is the redirector, which likely leads to further malicious content or phishing attempts.

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=cjb+cheat+menu
    • https://cdn.shopify.com/s/files/1/0430/4230/8250/files/casting_process_defects.pdf
    • https://cdn.shopify.com/s/files/1/0432/6991/4782/files/sajutowafi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lagikemirulufuwetore.pdf
    • https://cdn.shopify.com/s/files/1/0432/3622/9278/files/sigafodewafekuxidonifus.pdf
    • https://cdn.shopify.com/s/files/1/0439/4654/1211/files/better_man_pearl_jam_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0439/9670/9022/files/optc_doffy_v2_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/3551/6318/files/60247876589.pdf
    • https://cdn.shopify.com/s/files/1/0430/8166/2613/files/32899773710.pdf
    • https://static.usrfiles.com/ugd/b8c837_7d9e9592253e44b8b58d25baa5b756a9.pdf
    • https://static.usrfiles.com/ugd/b8c837_19eb905ce2e84e5c9984de8a8255a2fc.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_off000062b7.bin
8d5928166435e6a70f8039686b71d3d9fa9f1dd5e70a15def5a8317de511eb68		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62B7 4852 bytes
font_01_sfnt_off00007316.bin
9b1112a9fac9758000a813deff19221e3bff948a9626bee95fce819cf9aec7c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7316 10192 bytes

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