Malicious PDF — malware analysis report

Static analysis result for SHA-256 b68b8c7b85248461…

MALICIOUS

PDF

44.4 KB Created: 2020-08-31 03:21:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 752442faa0e36f999cd34e3de0469874 SHA-1: ff499a0c4369b9a5b6a619ffbbf798157a450ea2 SHA-256: b68b8c7b85248461c121e309875642bf221e1fb60dcd3fc88ece382b922b8241
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 'ttraff.com'. The document body, though heavily obfuscated, contains a reference to the same URL. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many of which are benign Shopify links, likely intended to mask the malicious redirector.

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.com/wix?keyword=sunderkand+ashwin+pathak+audio+free
    • https://cdn.shopify.com/s/files/1/0434/7274/8709/files/58363874903.pdf
    • https://cdn.shopify.com/s/files/1/0430/3906/4225/files/17469693176.pdf
    • https://cdn.shopify.com/s/files/1/0437/5917/3790/files/62881930570.pdf
    • https://cdn.shopify.com/s/files/1/0429/3473/0911/files/managing_stress_in_recovery_worksheets.pdf
    • https://static.usrfiles.com/ugd/24853a_3c90cebf52454073b57ab652e54f76b0.pdf
    • https://static.usrfiles.com/ugd/6cf0f5_a3306dafc58d4c39a2193b2d023c0caf.pdf
    • https://static.usrfiles.com/ugd/de02f3_0c868309a1c2483fa96931f6ef2ba5f5.pdf
    • https://static.usrfiles.com/ugd/b8c837_e361f78b2b334e9f896c843e33f55519.pdf
    • https://static.usrfiles.com/ugd/b48b60_f97cf1c6765144f8b924a2c71cbfe8d3.pdf
    • https://static.usrfiles.com/ugd/0bcf16_70bf7ff6d2a240d7b2c82575f3543789.pdf
    • https://static.usrfiles.com/ugd/b8c837_96ef957819994517b88d579f13cb03cc.pdf
    • https://cdn.shopify.com/s/files/1/0433/8126/0440/files/said_convocatoria_2018.pdf
    • https://cdn.shopify.com/s/files/1/0437/3266/4481/files/wevadokofusikowezuvobuf.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_off00005b61.bin
5cfa6c424d9cf8bc0eb2f4b26f66526f0b7db0c78874c935d93b4b473f1f3189		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B61 5356 bytes
font_01_sfnt_off00006da0.bin
3881e8e53125964b92d53cba472aaeb66c28842ca00353d2674a79e07ae779fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DA0 10180 bytes
font_02_sfnt_off000090a3.bin
91e76813daa17e162f7aa4bf2d71c83287e3e731ffae3651842d6c2a47f53eb6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x90A3 5424 bytes

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