Malicious PDF — malware analysis report

Static analysis result for SHA-256 be507090fe8fd103…

MALICIOUS

PDF

38.6 KB Created: 2020-09-06 03:44:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5213344f3e5b6859a4b911d94cbac2d7 SHA-1: e1601ec5a850c2fbc9c2aac8898a83a395b36e09 SHA-256: be507090fe8fd10390d8fe182aa94804c54354c9b6c54f23b8209c0e5f328d0a
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, which is also present in the document body. The document also exhibits characteristics of a link farm, with numerous embedded URLs pointing to Shopify-hosted PDFs. The primary malicious URL, https://ttraff.me/wix?keyword=azure+active+directory+synchronization+services, is likely used to redirect the user to a malicious site. The document's content and structure suggest a social engineering attempt to trick users into clicking the link.

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=azure+active+directory+synchronization+services
    • https://cdn.shopify.com/s/files/1/0428/7207/8499/files/motudu.pdf
    • https://cdn.shopify.com/s/files/1/0430/6799/8359/files/ravijiwewedimowoxo.pdf
    • https://cdn.shopify.com/s/files/1/0437/2021/2635/files/mewutebonurumofene.pdf
    • https://cdn.shopify.com/s/files/1/0428/9419/6902/files/13948438807.pdf
    • https://cdn.shopify.com/s/files/1/0432/4425/7442/files/48597391992.pdf
    • https://cdn.shopify.com/s/files/1/0429/9587/6003/files/nonor.pdf
    • https://cdn.shopify.com/s/files/1/0433/8820/7254/files/zuxumikivanodazeluxurebir.pdf
    • https://cdn.shopify.com/s/files/1/0435/3795/7023/files/dafokuj.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_off00005b32.bin
26b38004a9d1a65fa374abfb05f15f1933989d7703b0a8f52d7c170edc492381		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B32 5196 bytes
font_01_sfnt_off00006ced.bin
70b2f5cc1323bb3d33f3a3c53047e3edd4184b464dc5b732dfbc53b35a44ab1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CED 9704 bytes

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