Malicious PDF — malware analysis report

Static analysis result for SHA-256 f39a10e4ee7040a5…

MALICIOUS

PDF

41.8 KB Created: 2020-09-02 00:37:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 45715132779ec7dc76138a1d90968c5b SHA-1: 2e1d1e043f52abe0ddefea9584d23fbdb4b9fe41 SHA-256: f39a10e4ee7040a5aac2d2eca779bf60db760373a4a5b8e1d060da29110ef958
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=ableton+sample+packs+free'. Additionally, it exhibits a PDF link farm behavior, with numerous links hosted on 'static.usrfiles.com'. The document body, though heavily obfuscated, contains text suggesting a lure for 'ableton sample packs free', likely intended to entice users to click the malicious link.

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.cc/wix?keyword=ableton+sample+packs+free
    • https://static.usrfiles.com/ugd/909b15_597ad793fd704eca8e9a617f9e34c38d.pdf
    • https://static.usrfiles.com/ugd/54dfea_3591c2802f614ccb990a5a60356fb671.pdf
    • https://static.usrfiles.com/ugd/516793_06892d09b3cf4a35bd599cc452c02107.pdf
    • https://static.usrfiles.com/ugd/b8bbd7_a8c88d5c21c84cd4aaa32048d667acad.pdf
    • https://static.usrfiles.com/ugd/b8c837_f3cddb0cad2f4dfdb061d0873098eabd.pdf
    • https://static.usrfiles.com/ugd/a31856_3628ed5a0c4e4117b928b3ff520b5183.pdf
    • https://static.usrfiles.com/ugd/9ea91e_633da9ff9a9f446585e3fb68224673a7.pdf
    • https://static.usrfiles.com/ugd/3e5db3_f28723f8a1114438812430946b6430f5.pdf
    • https://static.usrfiles.com/ugd/384ea4_3b9dacd8125040879bdddc4425a24870.pdf
    • https://static.usrfiles.com/ugd/a640e9_fd97a467bbdf49f091e1e7c0d32bfb87.pdf
    • https://static.usrfiles.com/ugd/6f58fb_a4ae3ccd61aa409fb96f679811ef60b1.pdf
    • https://static.usrfiles.com/ugd/865d50_d7d6ce7e76574248974f52dcdf4b505a.pdf
    • https://static.usrfiles.com/ugd/b8c837_e37f0d60dca64d2186135b4c078352fe.pdf
    • https://static.usrfiles.com/ugd/f09a9d_f2e7b29e6f4f4955bd91f75361f1b223.pdf
    • https://static.usrfiles.com/ugd/b91566_97bcabc27efd4471a050f952e59988c8.pdf
    • https://static.usrfiles.com/ugd/f34823_94669117821f452dbb3ff9dea992760a.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_off0000647a.bin
d6a1c7e1742a357fd22014b1897c9711c5220735711f148a76ceed1e09e0d48e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x647A 5356 bytes
font_01_sfnt_off00007699.bin
4649b097b584a25fe3c27c688efeebdefd5ab49f1e6405cb9300658ef3f63667		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7699 10640 bytes

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