Malicious PDF — malware analysis report

Static analysis result for SHA-256 267b1e36f351bf31…

MALICIOUS

PDF

38.9 KB Created: 2020-08-27 22:45:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ff7b52ce23b91d3c5710ae31f343f4ac SHA-1: 122ba15ea9af6e083d1a38c27a393ad9e691af38 SHA-256: 267b1e36f351bf31e7aececf7490d4732202998c4e97df84fce661140d3a97e3
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM indicate a pattern of link farming and redirection to potentially harmful sites. The presence of the URL 'https://ttraff.ru/pify?keyword=kotor+2+armor+restriction+mod' further supports this, as it points to a known malicious redirector. The document body contains garbled text and a reference to the same malicious URL, suggesting it's part of a lure.

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=kotor+2+armor+restriction+mod
    • http://files.aroundthepros.com/uploads/1/3/0/8/130814769/guzujofawutef.pdf
    • http://nojebak.shopvintagedallas.com/uploads/1/3/2/6/132682646/c9c347e.pdf
    • https://cdn.shopify.com/s/files/1/0432/4586/3067/files/arabic_ocr_online.pdf
    • https://cdn.shopify.com/s/files/1/0428/5366/2876/files/bodufoletatutapetateva.pdf
    • https://cdn.shopify.com/s/files/1/0432/8400/5032/files/tofawuturekipijin.pdf
    • https://cdn.shopify.com/s/files/1/0432/2341/6987/files/82268571603.pdf
    • https://cdn.shopify.com/s/files/1/0431/9900/4827/files/drum_notation_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0435/3956/2645/files/boostrix_package_insert.pdf
    • https://cdn.shopify.com/s/files/1/0427/7485/5846/files/37019403961.pdf
    • https://cdn.shopify.com/s/files/1/0431/9667/8301/files/best_3d_pool_game_pc_free.pdf
    • https://cdn.shopify.com/s/files/1/0427/7121/8588/files/how_to_save_a_twitter_gif.pdf
    • https://cdn.shopify.com/s/files/1/0438/0934/1597/files/jasper_report_java_bean_datasource.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_off00005b0f.bin
c69e88fa3985bba93891cec1254e196a2c6a997e58b17881a710e52f84d961a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B0F 5152 bytes
font_01_sfnt_off00006c7a.bin
305d154308bdcbc84bf177008edb73618e8f8c54a2a94deb38ecb29da83a0ef4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C7A 10196 bytes

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