Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b8d268c51930162…

MALICIOUS

PDF

40.9 KB Created: 2020-09-01 16:21:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6fad4608044981cc5aca16eb1c28e9de SHA-1: 8b47c7377637be3d8898d1f2a0abd3ed27f15208 SHA-256: 9b8d268c51930162f3d9b846381d07b9ef8006249ca74c06cf352e5ae8b061d8
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 User Execution: Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains a link to a known malicious redirector, ttraff.cc, which is part of a lure to trick users into believing they need to view a document or update their payment information. The heuristic firings indicate this is a payment redirection lure and a browser installation lure, suggesting a social engineering attack. The embedded URL is likely intended to lead the user to a malicious site for credential harvesting or malware delivery.

Heuristics 5

  • 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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=freeradius+beginner%2527+s+guide+pdf
    • https://static.usrfiles.com/ugd/b8c837_de1982beb60f4633a0fc9de9b3d86fd8.pdf
    • https://static.usrfiles.com/ugd/b8c837_0855aecdad9f4b0aa0a1147d93c609aa.pdf
    • https://static.usrfiles.com/ugd/c7ef1a_e633cfe0829e4fd787c9401812b37d1e.pdf
    • https://static.usrfiles.com/ugd/69b86f_4d19caa9546647eda73dcd12680bd6a5.pdf
    • https://static.usrfiles.com/ugd/1df9ea_61f84a3a4eac46d59fbbbbe120bf9457.pdf
    • https://static.usrfiles.com/ugd/49be48_ed989291dde547d4b8a0487eb5151c51.pdf
    • https://static.usrfiles.com/ugd/fedf23_42a73eca6b4b434aad2184f94c93f30a.pdf
    • https://cdn.shopify.com/s/files/1/0431/2681/6932/files/98500511871.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/kalebujagutuwu.pdf
    • https://cdn.shopify.com/s/files/1/0431/3609/0273/files/77225768600.pdf
    • https://cdn.shopify.com/s/files/1/0431/8350/5570/files/pearson_envision_math_grade_5_answer_keys.pdf
    • https://cdn.shopify.com/s/files/1/0431/6594/1917/files/pizza_bolis_menu.pdf
    • https://cdn.shopify.com/s/files/1/0431/4746/0768/files/motamikoronemusisogalux.pdf
    • https://cdn.shopify.com/s/files/1/0439/0263/2104/files/circular_motion_worksheet.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_off00006217.bin
564b3e8c6b8af61e70fdff51a54ba09c44a4a09834129a845243730e1bdc992d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6217 5304 bytes
font_01_sfnt_off00007437.bin
7b46bd4fe1fd425f946d56d73170b206b02f073a6136faa051de2f2f0745e569
pdf-font-stream PDF embedded font (sfnt) at offset 0x7437 10348 bytes