Malicious PDF — malware analysis report

Static analysis result for SHA-256 776daaf2c3a7a4cf…

MALICIOUS

PDF

47.2 KB Created: 2020-09-16 19:20:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6a69e028b99b49bdb12cfca99ca57377 SHA-1: 62c7ae24bc3640a967d0320ee8677c44de136418 SHA-256: 776daaf2c3a7a4cf8d2f0eb76cc746756b3ed45ca99fd9e1f84ac744e3ffe791
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

The PDF file contains a large number of embedded external links, a technique often used for SEO poisoning or to redirect users to malicious sites. One of the URLs, 'https://ttraff.me/wix?keyword=stryfe+marvel+legends', is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL and other PDF links, reinforcing the link farm and redirection attack pattern. No scripts were extracted, limiting the analysis to the PDF structure and embedded URLs.

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=stryfe+marvel+legends
    • http://files.blueridgetu.org/uploads/1/3/0/7/130776763/4507603.pdf
    • https://cdn.shopify.com/s/files/1/0438/1822/1728/files/demamepusodakusazizup.pdf
    • https://cdn.shopify.com/s/files/1/0430/5590/6967/files/makuxidu.pdf
    • https://cdn.shopify.com/s/files/1/0434/4764/8412/files/xiwupadodajosatateketaxe.pdf
    • https://cdn.shopify.com/s/files/1/0432/8977/2187/files/pdf_to_excel_vba.pdf
    • https://cdn.shopify.com/s/files/1/0436/7400/9753/files/lokafapuxilowuk.pdf
    • https://cdn.shopify.com/s/files/1/0429/3564/8409/files/wings_of_fire_bengali_version.pdf
    • https://3b1e6c04-7fe6-4871-ba8b-c96d3c0c4bb9.filesusr.com/ugd/2813e2_be26c7cc29c3482c91da90fafe1028c2.pdf?index=true
    • https://1919e77d-ac4e-4d95-9b83-b78ef7934fe2.filesusr.com/ugd/143c98_cd2c082391074f73bf9a5005707e5a97.pdf?index=true
    • https://a6e6d7ee-c05e-466b-8b18-7ea24baad5d2.filesusr.com/ugd/3f2390_9e34efe1a7e44d27a5316e28acd5261c.pdf?index=true
    • https://7e8e1158-418a-43d7-a159-073f63f89a3c.filesusr.com/ugd/26481d_f948e5949e05452e9d73e4e085ba495f.pdf?index=true
    • https://a784d1b3-3aa4-4fe8-8b2d-7a0ebf7a3269.filesusr.com/ugd/4a2613_6a24e6cd28584d0f90b236389d351bcc.pdf?index=true
    • 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_off00007a1d.bin
4785a5dc0fc5f2c2794afdf10e2b6b3e34a1ae360128ecd5a6c3211f8b0ebc98		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A1D 5492 bytes
font_01_sfnt_off00008cc2.bin
5b2780733732bb14158596da8d72ece77c842cb27cc99c05a57d736eeecf8192		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CC2 10308 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.