Malicious PDF — malware analysis report

Static analysis result for SHA-256 db75dd38199b91e5…

MALICIOUS

PDF

62.1 KB Created: 2020-08-29 20:54:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 473cd27adfb9677112b00b5bf85f274e SHA-1: ff534e49e0e964a73457ec9952ef383db60dd8f3 SHA-256: db75dd38199b91e5c04738151019165d19820eb0e4549c6a5a07167208cce111
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, specifically pointing to 'https://ttraff.me/wix?keyword=pokemon+ruby+destiny+life+of+guardia'. This URL is presented within the document body, disguised with a keyword that suggests game-related content. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many of which point to 'static.usrfiles.com'. The primary malicious IOC is the redirector URL, which is likely used to lead the user to a further malicious destination.

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.me/wix?keyword=pokemon+ruby+destiny+life+of+guardia
    • https://static.usrfiles.com/ugd/c068f8_7709e9e7512242ee93e1e44357106dc2.pdf
    • https://static.usrfiles.com/ugd/d94ae5_862b95b261ff4724a3014e71a28952e9.pdf
    • https://static.usrfiles.com/ugd/b8c837_20112825a67444488be804422d35c2d6.pdf
    • https://static.usrfiles.com/ugd/cdb50c_f2ca0d4fc2f34e388b4f5ef4c5b1c9d1.pdf
    • https://static.usrfiles.com/ugd/b8c837_d850670ac11a4000abbfad43d7352e1b.pdf
    • https://static.usrfiles.com/ugd/0c268c_520e1ddfe6e64fdf96df98a0cadd6a39.pdf
    • https://cdn.shopify.com/s/files/1/0463/6173/9419/files/59458755803.pdf
    • https://cdn.shopify.com/s/files/1/0437/2214/5943/files/25633203207.pdf
    • https://cdn.shopify.com/s/files/1/0434/1569/9621/files/codycross_answers_group_41_puzzle_4.pdf
    • https://cdn.shopify.com/s/files/1/0434/1914/0252/files/92359711446.pdf
    • https://cdn.shopify.com/s/files/1/0431/0020/9319/files/jisare.pdf
    • https://cdn.shopify.com/s/files/1/0427/9376/2975/files/81663739930.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_off0000a73f.bin
643b25486c9fb9f332ba76608bf2a048c807c7bbd0c221f9437f28a0373d469a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA73F 5416 bytes
font_01_sfnt_off0000b991.bin
8183c7a4f12309bf3eb2f0a6996cb6c183bf5ec1856151d6fade66b04327f245		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB991 10520 bytes
font_02_sfnt_off0000dd57.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDD57 4324 bytes

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