Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca06c9cd0c0deacf…

MALICIOUS

PDF

39.7 KB Created: 2020-08-02 12:52:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7686c4af9a4fd2d0e3fef7ffec97b098 SHA-1: 769b9b21af9df575da005b6358272133a677c773 SHA-256: ca06c9cd0c0deacffc065cc5f3dae566f8211d2982829f462f12bc5db594ab36
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with the primary redirector URL being https://ttraff.ru/pify?keyword=react+native+cache. This indicates a link farm or redirector strategy, likely designed to lead users to malicious content. The presence of numerous external links, many pointing to Shopify-hosted PDFs, suggests an attempt to obscure the final malicious destination.

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/pify?keyword=react+native+cache
    • http://files.therinkbattlecreek.com/uploads/1/3/1/3/131398406/4802581.pdf
    • http://files.ankefc.com/uploads/1/3/1/0/131070317/8992524.pdf
    • http://files.foundationschurch.com/uploads/1/3/2/8/132814123/7248922.pdf
    • http://files.showroom-305.com/uploads/1/3/2/6/132681690/dirudukema.pdf
    • https://cdn.shopify.com/s/files/1/0433/1995/1513/files/28415034029.pdf
    • https://cdn.shopify.com/s/files/1/0440/1407/6069/files/gurisomunowiwew.pdf
    • https://cdn.shopify.com/s/files/1/0432/4950/0315/files/vakitadexitap.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rafudegilezenetizaxesuvos.pdf
    • https://cdn.shopify.com/s/files/1/0438/6599/7472/files/tinatoborerejixux.pdf
    • https://cdn.shopify.com/s/files/1/0439/8897/5774/files/pavolusakokexopajirifiwer.pdf
    • https://cdn.shopify.com/s/files/1/0431/4769/0145/files/tejoteparepazi.pdf
    • https://cdn.shopify.com/s/files/1/0432/5680/7586/files/38715602008.pdf
    • https://cdn.shopify.com/s/files/1/0433/8358/6974/files/fubatazilimosotekatu.pdf
    • https://cdn.shopify.com/s/files/1/0438/0209/9873/files/27986970611.pdf
    • https://cdn.shopify.com/s/files/1/0440/6634/1029/files/63059717243.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_off00005d64.bin
99a8656de293a94dfe0484c55e3add8f0fab65d76699fad856cbe3330412417b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D64 4648 bytes
font_01_sfnt_off00006d3f.bin
c8250ee2512d6156e783f15425a36f3664becde8649ffdd3c4996ebed408ec39		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D3F 10860 bytes

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