Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3b968319cbda085…

MALICIOUS

PDF

41.4 KB Created: 2020-09-04 01:50:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 86dc6d5e65eddf52df48dab3ddbb4e52 SHA-1: 40fb595c10907597dbff6023706c13d9cd460730 SHA-256: a3b968319cbda0850361dee9ff196fa35d05df277f8e2e81718b8749bd689490
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic indicating it links to a known malicious redirector. The document body, though heavily obfuscated, contains text related to a 'simple discounted cash flow template' and includes the malicious URL. The presence of numerous external links, many pointing to Shopify, suggests a link farm designed to obscure the ultimate destination and potentially spread malicious content. The primary malicious URL is ttraff.link, which redirects to a page related to the template.

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=simple+discounted+cash+flow+template
    • https://cdn.shopify.com/s/files/1/0436/0686/8131/files/80082615169.pdf
    • https://cdn.shopify.com/s/files/1/0432/2197/5197/files/89268211545.pdf
    • https://cdn.shopify.com/s/files/1/0428/2174/6847/files/vizilip.pdf
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/jexibiduvowalaruworaw.pdf
    • https://cdn.shopify.com/s/files/1/0429/2784/9639/files/84185186131.pdf
    • https://static.usrfiles.com/ugd/badafb_4fff0bdc035a4c488d0cb3ad9413b24e.pdf
    • https://static.usrfiles.com/ugd/b8c837_12333d7671754cb5b0c789b58daf2eac.pdf
    • https://static.usrfiles.com/ugd/0adedf_9744b1d5d7e54d208943d3dc806f6e71.pdf
    • https://static.usrfiles.com/ugd/cc3ca9_be042477aac244629ac1c66a59b06191.pdf
    • https://cdn.shopify.com/s/files/1/0430/1642/1529/files/87314376993.pdf
    • https://cdn.shopify.com/s/files/1/0435/1187/3688/files/72910509927.pdf
    • https://cdn.shopify.com/s/files/1/0432/3059/3192/files/20030419293.pdf
    • https://cdn.shopify.com/s/files/1/0434/3644/1767/files/cells_alive_webquest_answer_key.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_off00006235.bin
22103f150fc06393dead9e544dbe83d8dcf7c1abd7198c3aeb79f3d1dcfabf16		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6235 5496 bytes
font_01_sfnt_off000074d9.bin
7541d5f12b9dcb6a3c563a03db91dc891267d715e161881c6ef4cf3cb07f6e57		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74D9 10468 bytes

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