Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0d00f74c119d81a…

MALICIOUS

PDF

38.9 KB Created: 2020-09-03 21:28:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5e6f3c91772f193f6dd97fbe31aee945 SHA-1: 0e1395e4821f6f3435cc8246ec221fc4e3b16544 SHA-256: f0d00f74c119d81a80f75bb0dccb93e092a022a4318a761bac9b45630017fa6e
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/wix?keyword=spanish+worksheets+clothing+vocabulary'. This URL is likely intended to lead the user to a malicious site. The file also exhibits characteristics of a link farm, with numerous embedded URLs, suggesting an attempt to manipulate search engine results or distribute malicious content. The document body, though heavily obfuscated, contains the same suspicious URL.

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=spanish+worksheets+clothing+vocabulary
    • https://static.usrfiles.com/ugd/b8c837_5fdb7d79bdff4ada8e030df7de01ffe3.pdf
    • https://static.usrfiles.com/ugd/906e9f_11aaaaad9fc040b2b24023bfba9f958f.pdf
    • https://static.usrfiles.com/ugd/d902bb_914490567cd7495f9cf07c9067ab7bb5.pdf
    • https://static.usrfiles.com/ugd/0fdb6d_833bc6d01d5445869a83c300fcaffa99.pdf
    • https://cdn.shopify.com/s/files/1/0435/2383/4011/files/at_t_dns_error_assist.pdf
    • https://cdn.shopify.com/s/files/1/0433/3882/5887/files/68047137242.pdf
    • https://cdn.shopify.com/s/files/1/0433/9970/8821/files/xafubiso.pdf
    • https://cdn.shopify.com/s/files/1/0435/1308/6106/files/28568990165.pdf
    • https://static.usrfiles.com/ugd/8ab72e_d364920403054e559a988fdffd077cf1.pdf
    • https://static.usrfiles.com/ugd/8acad3_8a5c71df9182429fafda7dd2ab792e0f.pdf
    • https://static.usrfiles.com/ugd/b0c8dc_0495b227433449b8acc1fc76967afedf.pdf
    • https://static.usrfiles.com/ugd/d99ef3_43f8394e614849b2b03fb4fee3590ec1.pdf
    • https://static.usrfiles.com/ugd/e4ee87_d5c25a0c41664e2b925bd5cd4bc0a2e2.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_off0000570c.bin
df7b62787da68819d1cc78625999d7877935460d36ff16cdf700591e8ce80d58
pdf-font-stream PDF embedded font (sfnt) at offset 0x570C 5756 bytes
font_01_sfnt_off00006abb.bin
7fd6e2a5d6cbaef71ddedb14dc77ecf5b5235ebe3e190a5d8cec73a25838748f
pdf-font-stream PDF embedded font (sfnt) at offset 0x6ABB 10536 bytes