Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef08867c1f65074a…

MALICIOUS

PDF

45.7 KB Created: 2020-09-02 10:59:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 471a9eb3c25771f8fe402054dcdbc018 SHA-1: 916d2c89254a6d18c0c7355db407cc1d3c3d5a02 SHA-256: ef08867c1f65074a8da25cfbf4bda0b30090f558fe7299fafa3fc3c7f50e91e7
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=logo+templates+free++psd'. The document body, though heavily garbled, contains text related to logo templates and the malicious URL. The file also exhibits characteristics of a PDF link farm, with numerous external links, many of which are benign Shopify URLs, but the primary redirector is malicious. No scripts were extracted from this sample.

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=logo+templates+free++psd
    • https://cdn.shopify.com/s/files/1/0437/3577/7445/files/160793123.pdf
    • https://cdn.shopify.com/s/files/1/0431/0787/7017/files/albertine_disparue_marcel_proust.pdf
    • https://cdn.shopify.com/s/files/1/0430/7582/9911/files/gemenaxepev.pdf
    • https://cdn.shopify.com/s/files/1/0428/7778/0134/files/arianna_huffington_sleep_revolution.pdf
    • https://cdn.shopify.com/s/files/1/0431/7632/9373/files/82458189488.pdf
    • https://static.usrfiles.com/ugd/b8c837_f7ab4f29fb2a47d6b67267b97015b512.pdf
    • https://static.usrfiles.com/ugd/eed56f_bfbe5216372a4718bb99feb4eaa7b7a1.pdf
    • https://static.usrfiles.com/ugd/b8c837_598d6818cebb42b9a47e2967aa1b1525.pdf
    • https://static.usrfiles.com/ugd/ce5d00_e9b1e137d62f4c9e8f2df641a52c7d11.pdf
    • https://static.usrfiles.com/ugd/f09a9d_81afbf39b8d24d39bdf2cbb842a39663.pdf
    • https://static.usrfiles.com/ugd/b8c837_aafe7d4a9c8c49fa97a38022815f22f7.pdf
    • https://static.usrfiles.com/ugd/e2c250_b8e09581a2e941989ee3bc979a867213.pdf
    • https://static.usrfiles.com/ugd/1df9ea_147e6193b65a42e0a0aa9bb23683dd7f.pdf
    • https://static.usrfiles.com/ugd/b8c837_93241c886a3e4ff28d10ec4dead6cf3e.pdf
    • https://static.usrfiles.com/ugd/ca300b_cc877de51a924b46affb76e0cd532d1c.pdf
    • https://static.usrfiles.com/ugd/4bb894_e3266cfe19a449bcb2b81ce4afb2423f.pdf
    • https://static.usrfiles.com/ugd/a4d998_79f38eb7419c4369a9cf7c7f6580af79.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_off0000646e.bin
68eb00389626d30cbbf025a09b7e4774aae0d7d1ea1631441efc26c337c55c28
pdf-font-stream PDF embedded font (sfnt) at offset 0x646E 4936 bytes
font_01_sfnt_off00007543.bin
d2119952baa215fb759c7f3b238ef258b7e44c54e0e9acf2e925de9ecc491ef8
pdf-font-stream PDF embedded font (sfnt) at offset 0x7543 11920 bytes
font_02_sfnt_off00009be1.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0x9BE1 4324 bytes