Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f49291b0340a7ef…

MALICIOUS

PDF

41.4 KB Created: 2020-08-29 04:00:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ea5fb50f568f71778559e181a1ddd6d SHA-1: e58c69cd7b5ad5882df702145e90f8ec1cd31cbf SHA-256: 1f49291b0340a7eff57227777b47652202978efb5e05d83fa0102147135ca625
120 Risk Score

Malware Insights

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

The PDF file contains a mass external PDF link farm, with multiple links pointing to various PDF files hosted on static.usrfiles.com and cdn.shopify.com. One of the primary links, ttraff.ru, is identified as a malicious redirector. The document body contains garbled text but includes the same malicious URL and benign PDF links, suggesting a lure to download further content or redirect to malicious sites.

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=johny+mone+johny+ringtone+download
    • https://static.usrfiles.com/ugd/b8c837_df0594bf9dcc475f9739fd2f7802f66a.pdf
    • https://static.usrfiles.com/ugd/b8c837_c45e7602865345cea4cf140f4d1347eb.pdf
    • https://static.usrfiles.com/ugd/b8c837_5c67f7cb46ec4db4bb313ee2c5d72f4c.pdf
    • https://static.usrfiles.com/ugd/b8c837_1cad664b32c740599c559bfef1fdb2b9.pdf
    • https://static.usrfiles.com/ugd/b8c837_b60e867d04ef4ba2a0132c422b7b7d6b.pdf
    • https://cdn.shopify.com/s/files/1/0466/5858/4741/files/xituzatibanel.pdf
    • https://cdn.shopify.com/s/files/1/0431/9831/6705/files/3914300453.pdf
    • https://cdn.shopify.com/s/files/1/0435/6472/8483/files/surevinokedarubujesimerif.pdf
    • https://cdn.shopify.com/s/files/1/0438/4024/1829/files/nibob.pdf
    • https://static.usrfiles.com/ugd/b8c837_a6513caed15544eba0daf023de20d427.pdf
    • https://static.usrfiles.com/ugd/b8c837_b072c06d4a21493abc00cecbcca5bde9.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004ebb.bin
8dae72bf699439a165cec556b6a4aac177d773e8cc12b54e5c423b12b6bec162		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4EBB 5320 bytes
font_01_sfnt_off000060b0.bin
ea83dfe612d43d38f2e0b8b1546369bf1d8b9b8f6540c34785f0f75b2691e7ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60B0 3304 bytes
font_02_sfnt_off00006d92.bin
be6e62014caff1fe6573b8b67ae30becbe02d7406017e3897031cae2754519f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D92 13904 bytes

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