Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2d829a0ae76d347…

MALICIOUS

PDF

43.2 KB Created: 2020-08-29 22:46:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d7608d455990f80985bcee8f6273a3f SHA-1: b56de34d2ef0485d6889ef840a955d3e01180086 SHA-256: b2d829a0ae76d347c1710e04906ac34d9a6d43565db7cb21b17c46910df192f4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1059 Command and Scripting Interpreter

The PDF contains a malicious redirector link pointing to 'https://ttraff.ru/wix?keyword=fontlab+studio+torrent', which is designed to lure users into downloading potentially malicious software. Additionally, the document includes a heuristic firing for 'SE_CLIPBOARD_COMMAND_LURE', indicating it instructs the user to copy and paste content into a command-line interface. This suggests an attempt to trick the user into executing commands, likely to download and run a second-stage payload.

Heuristics 4

  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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=fontlab+studio+torrent
    • https://static.usrfiles.com/ugd/ea5d7b_da57c4c6e9974d2782c5b455e2120a8e.pdf
    • https://static.usrfiles.com/ugd/b8c837_d6ea4f02b4f949c388442a0ebcf8720c.pdf
    • https://static.usrfiles.com/ugd/b8c837_1aebf2644115421aa3651062f9b44d5f.pdf
    • https://static.usrfiles.com/ugd/b8c837_fdac5216c419411fbf86e9ccc374eabb.pdf
    • https://static.usrfiles.com/ugd/87a178_32a9661bcc824f39b9907b51ed8fba23.pdf
    • https://static.usrfiles.com/ugd/79cb75_5439f02d15c242e488d6c3edf6144b61.pdf
    • https://static.usrfiles.com/ugd/b8c837_03e9a6fc9f304463a1828aca2eb07652.pdf
    • https://static.usrfiles.com/ugd/0789d5_0550dcbd7aa04aa7ac1613f17d99d7df.pdf
    • https://static.usrfiles.com/ugd/ea2f88_18484bb26730435a929bf8106195c322.pdf
    • https://static.usrfiles.com/ugd/b8c837_eff86e84fdb74fc0bf2afd4af8b1ec6c.pdf
    • https://static.usrfiles.com/ugd/b8c837_d7807bcadfb849dea0642997cd7616ff.pdf
    • https://static.usrfiles.com/ugd/b8c837_fbd1a2af1ae94595991240fcbf6f8176.pdf
    • https://static.usrfiles.com/ugd/b5472a_1e7e15e66e824eccbb8b504e16648737.pdf
    • https://static.usrfiles.com/ugd/b8c837_c84418c1503d410ba113c80ac25457ed.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_off000064a7.bin
02763c1646f6ee3530b58b62ad4c408022674de87e2ab976d1e3d9911a66356e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64A7 4916 bytes
font_01_sfnt_off0000755e.bin
c39aac769a41c611913262071a266f2a83efcd5f9dc5af456c5ff7a9d349f93c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x755E 13460 bytes

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