Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d338fe47f1e9b92…

MALICIOUS

PDF

29.9 KB Created: 2020-08-25 08:53:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6e38ac19d0b23fb58426e12e1a6d8446 SHA-1: 4a346b66bdb58054c9183812e54544709661ab83 SHA-256: 3d338fe47f1e9b9276b10edb4e918d764084d30e26eed102301e98bd96a8d02a
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to Shopify domains, forming a link farm. One of the primary links directs to a known malicious redirector at 'ttraff.ru'. This suggests the document is designed to drive traffic to malicious infrastructure, likely for further exploitation or phishing. No scripts were extracted, and the document body is heavily obfuscated.

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=forest+animal+sounds+free
    • http://files.fucobi.org/uploads/1/3/0/8/130814432/xunafotetamelade.pdf
    • https://cdn.shopify.com/s/files/1/0434/2353/1175/files/abbyy_finereader.pdf
    • https://cdn.shopify.com/s/files/1/0432/5523/4710/files/arduino_cnc_projects.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fonufefijosogigu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/taniseraguvifololesugom.pdf
    • https://cdn.shopify.com/s/files/1/0432/0778/6657/files/65241974205.pdf
    • https://cdn.shopify.com/s/files/1/0434/8697/0021/files/jekefuxi.pdf
    • https://cdn.shopify.com/s/files/1/0435/1187/3688/files/72910509927.pdf
    • https://cdn.shopify.com/s/files/1/0434/1635/4978/files/basics_of_ai_and_machine_learning.pdf
    • https://cdn.shopify.com/s/files/1/0437/9813/4941/files/34592686333.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_off00003cb2.bin
bfd9b17147f291507f521f620c88e03ae93e4bf4dd360914a3487dc13e1e25d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3CB2 5008 bytes
font_01_sfnt_off00004d9c.bin
22db8c04b4ee9af89eba7691e1a1c77b79de657dd39a4356e1f554fca14b36b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4D9C 8756 bytes

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