Malicious PDF — malware analysis report

Static analysis result for SHA-256 e75e23e095980609…

MALICIOUS

PDF

42.4 KB Created: 2020-09-07 03:11:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 70a1fda64c4d28388651dfe6552203b9 SHA-1: 9da683a64b8f75767938fd875e9c5247dc9e7a8a SHA-256: e75e23e095980609fe668d9673a1dc6e471ff4737dfde9bef3a44bd8a9276861
120 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically disguised as a search result for 'all twitter pictures'. The primary malicious URL is https://ttraff.link/wix?keyword=all+twitter+pictures. The document body, though heavily obfuscated, contains this URL and numerous other links hosted on Shopify, likely to inflate search engine rankings and obscure the malicious redirector. 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.link/wix?keyword=all+twitter+pictures
    • https://cdn.shopify.com/s/files/1/0431/7046/3895/files/36671839596.pdf
    • https://cdn.shopify.com/s/files/1/0469/9933/9160/files/wabebepogeg.pdf
    • https://cdn.shopify.com/s/files/1/0465/2685/7374/files/jejeb.pdf
    • https://cdn.shopify.com/s/files/1/0464/2711/1576/files/new_passport_application_form_2019.pdf
    • https://cdn.shopify.com/s/files/1/0432/3957/1611/files/anime_ship_girl.pdf
    • https://cdn.shopify.com/s/files/1/0436/4242/1398/files/87320725790.pdf
    • https://cdn.shopify.com/s/files/1/0434/5420/2013/files/68239383109.pdf
    • https://cdn.shopify.com/s/files/1/0437/4947/4453/files/fufuwuxadovegabi.pdf
    • https://cdn.shopify.com/s/files/1/0432/9105/0137/files/39386084215.pdf
    • https://static.usrfiles.com/ugd/77eba6_90771c44a70e4740a901fa6a76e4d4c1.pdf
    • https://static.usrfiles.com/ugd/28146e_97672a3b4c7e4e0aac947abdd263d643.pdf
    • https://static.usrfiles.com/ugd/868b90_382e04e7c46048509be42e36695183e6.pdf
    • https://static.usrfiles.com/ugd/20d83a_0abe58f58cdc497281ab6df1a96a0eec.pdf
    • https://static.usrfiles.com/ugd/1b7c00_348150f160b244de8d5cd8b7e76797f8.pdf
    • https://static.usrfiles.com/ugd/b8c837_868d8264d78d4aec8feb2fc91f93e382.pdf
    • https://static.usrfiles.com/ugd/89441e_d8a8538ef41e430ea9db73dfaa503bcf.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_off00006974.bin
818f94f3dc3703bdd6cc2e6382a4b5712aab254bde2b05fe715d3410eb186538		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6974 4800 bytes
font_01_sfnt_off000079eb.bin
f52bed35ded6dbac953fc034ac4afb7ca9af090014b38994d81f0eb4906725a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79EB 10232 bytes

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