Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f09699eb9eb146e…

MALICIOUS

PDF

73.6 KB Created: 2020-09-08 12:33:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aeea60f25c61a441df5608761b76e1cd SHA-1: 9b2405c227850a22e0c6a785d89b03984d189090 SHA-256: 9f09699eb9eb146e31434575754eb7a5a593447346a15d728a979f5285d5e405
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/wix?keyword=2017+cadillac+ats+manual+transmission'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the same malicious URL and several benign-looking URLs, suggesting a lure to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=2017+cadillac+ats+manual+transmission
    • https://static.usrfiles.com/ugd/405339_6695b77d10ec4b63a34aeefbf3fa2a24.pdf
    • https://static.usrfiles.com/ugd/6cf392_6702d6656f42481d807775afe5b80076.pdf
    • https://static.usrfiles.com/ugd/3bcfef_5bcce7f29c274b30941a0a613038003a.pdf
    • https://static.usrfiles.com/ugd/cc10e7_10d58be1307e4b3bb0b4e96379a36919.pdf
    • https://static.usrfiles.com/ugd/b65acf_15ea877d9e334dc4814e0df8019e72eb.pdf
    • https://static.usrfiles.com/ugd/b50c55_7a2fd947db9045f590a253ad844a8779.pdf
    • https://static.usrfiles.com/ugd/8da65f_b032a18856bf427a9ed9cdbc9d7bf2f7.pdf
    • https://cdn.shopify.com/s/files/1/0435/7321/5387/files/2010_dinghy_towing_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/1056/4002/files/18915213321.pdf
    • https://static.usrfiles.com/ugd/a8ca0f_d449ae5b9a5c49b1bca63aa902bf3065.pdf
    • https://static.usrfiles.com/ugd/fedf23_324e43edbeeb468f8964d9c05dadea10.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a574.bin
dd0ac98dca88b4c5e50d50c869eb280f2e1cad354aed9688f4b17dd2510ad441		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA574 8832 bytes
font_01_sfnt_off0000c24e.bin
68c3c308c79770f254294085cffde51d29d6e538ce63b6a61991825003a1b9a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC24E 5396 bytes
font_02_sfnt_off0000d492.bin
f66801b9f649dd85b9543a1bf81691f99d07da81b092b0e3fd00ec93d94b0f2e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD492 14384 bytes
font_03_sfnt_off0001027d.bin
713933360072c9d59346590fad668f98c3603c6d2b72ed941ce85481f6af0b74		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1027D 16060 bytes

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