Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6139a6243325fa0…

MALICIOUS

PDF

64.6 KB Created: 2020-08-31 12:25:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 455afc65ddc0c6026b99acab9166f83a SHA-1: 963c1728852cee3730eb44e0019f6510ab5fe05b SHA-256: c6139a6243325fa0634bd0cb31913a476cf8d72e9ee88e05176f4c4f810555aa
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded external links, a technique often used for SEO farms or to redirect users to malicious content. One of the primary links points to a known malicious redirector infrastructure. While no scripts were extracted, the heuristic firings strongly suggest a malicious intent related to link manipulation and redirection.

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.com/wix?keyword=sacrosanct+-+vampires+of+skyrim
    • https://static.usrfiles.com/ugd/48d9a1_94801d955aa64da78fd7a6e0591d72c7.pdf
    • https://static.usrfiles.com/ugd/b8c837_76d2d8ee02c84bb3b86aaea4000516f3.pdf
    • https://static.usrfiles.com/ugd/23e9be_adac0506effd409d9d97b9c546c06e55.pdf
    • https://static.usrfiles.com/ugd/88a84f_ab476ed374554f70a057ed9d0aff5534.pdf
    • https://static.usrfiles.com/ugd/19103d_ef57a030d40645b992122a59f72f9d99.pdf
    • https://static.usrfiles.com/ugd/b8c837_608b274125884702a3938e1ac8db3600.pdf
    • https://static.usrfiles.com/ugd/c7ef1a_c02330d257814a45acc7a849fd1b6b12.pdf
    • https://static.usrfiles.com/ugd/b8c837_e1883669ff4c45148f125acd4cf4194b.pdf
    • https://static.usrfiles.com/ugd/289c5e_e6a33e8fed5b43e4845915bb531f502a.pdf
    • https://static.usrfiles.com/ugd/b8c837_da10094c12d44a4fa5e140784bde7f72.pdf
    • https://static.usrfiles.com/ugd/b8c837_0852081b39c14d01beebae5b6fbdd89e.pdf
    • https://static.usrfiles.com/ugd/b8c837_6b7033b76afb4be58cc8b6af50ca52f8.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_off0000b33e.bin
c1f534ecf19ab5dd4bec074efddcd333317b946cb3e436f9fe0d70ebaa567560		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB33E 3016 bytes
font_01_sfnt_off0000bdf8.bin
fac9dadfcc1a9ec8b0362c7fda57d748d3c89e89fbc81b58931c67b412f92937		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBDF8 5488 bytes
font_02_sfnt_off0000d0a8.bin
579a367561b780515240a71ebfbf423fd1c1488b26ab8f595b869c1b05ea7f75		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD0A8 10920 bytes

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