Malicious PDF — malware analysis report

Static analysis result for SHA-256 23a73b0d8ea2943a…

MALICIOUS

PDF

58.3 KB Created: 2020-08-30 11:18:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6b0afb58def327cbb17daa999dec934a SHA-1: 6e9f412c28b1f10b8520515bc60ca77792a5f69e SHA-256: 23a73b0d8ea2943a7dcddee3928a5b720a4f1d5c4c93175ffd2ca2fa3e305fa9
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. This indicates the document's primary purpose is to lure users to a potentially harmful website. The embedded URL is reconstructed as 'https://ttraff.ru/wix?keyword=dnd+5e+carry+weight+calculator'. No scripts were extracted from this sample.

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=dnd+5e+carry+weight+calculator
    • https://cdn.shopify.com/s/files/1/0437/6199/1841/files/39253583984.pdf
    • https://cdn.shopify.com/s/files/1/0428/3439/5295/files/foxanujigimetosi.pdf
    • https://cdn.shopify.com/s/files/1/0440/4733/5574/files/11251999134.pdf
    • https://cdn.shopify.com/s/files/1/0462/4180/8535/files/social_psychology_textbook_9th_editi.pdf
    • https://cdn.shopify.com/s/files/1/0433/7926/1590/files/kotagisadabejovered.pdf
    • https://static.usrfiles.com/ugd/ac51ce_37685203a3f14d168112277e5780b7db.pdf
    • https://static.usrfiles.com/ugd/d54300_e38f4b7c8491473b911e16223cfb5917.pdf
    • https://static.usrfiles.com/ugd/49be48_2a45f293d719410f943e9a1b6645d6f2.pdf
    • https://static.usrfiles.com/ugd/9dda13_4f99e91304ba459a913a41e95abbe892.pdf
    • https://static.usrfiles.com/ugd/dfb5f8_d5717a09bf72452988481b63ae65ab25.pdf
    • https://static.usrfiles.com/ugd/0f1814_e028a1fc75dc4680b2371d0f45f3eece.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_off0000a825.bin
add4298196e1ff3fd2ab9d48022035a9278a0fe910dc00a013b1bd2d65412a2e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA825 5340 bytes
font_01_sfnt_off0000ba59.bin
f8c3176dbc2cdc7e3bea2ea4c6596ac95d6fd49ecc8a2531f4a9743fae7a0f9f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBA59 10040 bytes

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