Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d2d5e518a5f25bb…

MALICIOUS

PDF

45.2 KB Created: 2020-07-27 17:40:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ff4cf6b360bdda3d0a31bcd2e4902c3d SHA-1: 048ac54bf086e5d7a32844affb0a244eb6d31acb SHA-256: 8d2d5e518a5f25bb18003d9f3bb902c223868353bd70d80d3384258d3d169b5e
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. Additionally, it exhibits a PDF link farm, with multiple links pointing to Shopify-hosted PDFs. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf. The primary attack vector appears to be luring the user to the 'ttraff.ru' domain via the embedded 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.ru/wb?keyword=omega%20speedmaster%20chronograph%20manual
    • http://files.pillowstudios.com/uploads/1/3/0/8/130874205/xusizanizag_wakato_nideduzuzilup_mofinamuroki.pdf
    • http://files.hickorytreeveterinaryhospital.com/uploads/1/3/0/7/130739393/pibanenixe.pdf
    • http://files.blumeyerinvestmentpartners.com/uploads/1/3/1/3/131398097/takuper-ropanawu-tuzuse.pdf
    • http://files.blumeye
    • https://cdn.shopify.com/s/files/1/0435/3916/9429/files/39898449456.pdf
    • https://cdn.shopify.com/s/files/1/0431/1125/2132/files/33306634711.pdf
    • https://cdn.shopify.com/s/files/1/0432/5244/9435/files/ratuwokegexukijupavori.pdf
    • https://cdn.shopify.com/s/files/1/0433/2562/0374/files/6379811553.pdf
    • https://cdn.shopify.com/s/files/1/0431/0538/6647/files/1683016898.pdf
    • https://cdn.shopify.com/s/files/1/0431/7049/6672/files/zovawutexipasadubazoj.pdf
    • https://cdn.shopify.com/s/files/1/0433/3866/2053/files/8789435001.pdf
    • https://cdn.shopify.com/s/files/1/0431/2976/6039/files/53415525399.pdf
    • https://cdn.shopify.com/s/files/1/0428/2764/5084/files/15171709098.pdf
    • https://cdn.shopify.com/s/files/1/0427/9291/1007/files/31307171506.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fixasitisajixumazurezeve.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tavolotifejenirogamofiv.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/18410569865.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_off000071a3.bin
99e434903d78939d10df1626df7b29680e6b88953adebe4e6d4cb3b309e80a9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71A3 5348 bytes
font_01_sfnt_off000083aa.bin
5a084859a548513bce139f21cf075e821bea09d78e76746be73b364d16572ae6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83AA 10604 bytes

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