Malicious PDF — malware analysis report

Static analysis result for SHA-256 be8e5b6765977f65…

MALICIOUS

PDF

43.4 KB Created: 2020-08-19 02:23:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3e3792f41c8f2ab01a48c6f3f6ca2778 SHA-1: f3725d19e819eb42ba1494212b3a688256c16bd3 SHA-256: be8e5b6765977f65894194cf4803506daf747c278ee4c2291edd9e53c8ec4f95
160 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1059 Command and Scripting Interpreter

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. Additionally, it exhibits a PDF link farm heuristic, with many links pointing to Shopify-hosted PDFs. The document body also contains instructions that lure the user into executing commands, likely to download and run a second-stage payload from the embedded URLs. The primary malicious URL is https://ttraff.ru/pify?keyword=anaconda+for+ubuntu+16.+04.

Heuristics 4

  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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.ru/pify?keyword=anaconda+for+ubuntu+16.+04
    • http://toguno.lastcallromanceband.com/uploads/1/3/1/4/131453536/aedd62.pdf
    • https://cdn.shopify.com/s/files/1/0429/7257/7946/files/debovepenajiwesubeme.pdf
    • https://cdn.shopify.com/s/files/1/0429/6481/1927/files/85687825855.pdf
    • https://cdn.shopify.com/s/files/1/0432/3993/2064/files/mechanics_and_thermodynamics_of_propulsion.pdf
    • https://cdn.shopify.com/s/files/1/0436/9442/4232/files/33600994276.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/40948382406.pdf
    • https://cdn.shopify.com/s/files/1/0435/0250/2048/files/bush_hill_park_primary_school_uniform.pdf
    • https://cdn.shopify.com/s/files/1/0449/4196/7528/files/international_dialing_codes.pdf
    • https://cdn.shopify.com/s/files/1/0431/9186/1410/files/gofavavisusubipegapexaxi.pdf
    • https://cdn.shopify.com/s/files/1/0431/0306/0128/files/dewajofuw.pdf
    • https://cdn.shopify.com/s/files/1/0435/9625/1304/files/46185931662.pdf
    • https://cdn.shopify.com/s/files/1/0427/7708/4070/files/25615802685.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_off0000641f.bin
03a60b3a2d8d70f07b0e1f40ab0f153f3750c560a41c3bc236eed2dba7da7a0f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x641F 5400 bytes
font_01_sfnt_off0000768c.bin
a7f57020f3ecea7ef25cb81129dff2c042539f3c8bfaab96cb8a3333917ad257		 pdf-font-stream PDF embedded font (sfnt) at offset 0x768C 13236 bytes

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