Malicious PDF — malware analysis report

Static analysis result for SHA-256 86b8455a0519ee45…

MALICIOUS

PDF

43.8 KB Created: 2020-08-20 10:30:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 58b86edf5e18d77d355cc05faea3b77d SHA-1: 37ee6aa17769a114e2b839e24aff6f4c5c71bf9d SHA-256: 86b8455a0519ee45ea4276621296928bc728ecc4c93b047d06c3c714ac7168f1
120 Risk Score

Malware Insights

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

This PDF document contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to a known malicious URL. The document body, though heavily obfuscated, contains the URL https://ttraff.cc/pify?keyword=enflow+fluid+warmer+manual, which is likely intended to lead the user to a malicious site. The PDF also contains a PDF_SEO_LINK_FARM heuristic, suggesting it is part of a larger campaign to generate traffic or distribute malicious content through numerous linked PDFs.

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.cc/pify?keyword=enflow+fluid+warmer+manual
    • http://files.noon2moon.com/uploads/1/3/1/8/131871535/733583.pdf
    • https://cdn.shopify.com/s/files/1/0437/6644/8277/files/pabaturogulivevasi.pdf
    • https://cdn.shopify.com/s/files/1/0430/6839/1591/files/61723829972.pdf
    • https://cdn.shopify.com/s/files/1/0432/2210/6271/files/nilelijazaxuzukuv.pdf
    • https://cdn.shopify.com/s/files/1/0448/2197/1104/files/ancient_greek_etymological_dictionary.pdf
    • https://cdn.shopify.com/s/files/1/0430/3287/1074/files/54915190082.pdf
    • https://cdn.shopify.com/s/files/1/0428/1915/8183/files/85613644665.pdf
    • https://cdn.shopify.com/s/files/1/0431/1141/5962/files/resonunulesuj.pdf
    • https://cdn.shopify.com/s/files/1/0431/7131/5876/files/tifepukuvesanafabopodetil.pdf
    • https://cdn.shopify.com/s/files/1/0428/6893/2767/files/69134822316.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wojilezufaguxulidumusad.pdf
    • https://cdn.shopify.com/s/files/1/0435/3572/8794/files/gegulamamawanudakijaleb.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_off00005fe6.bin
166557522925cd85024897f556fe66669f9ec4b7df6fb934cd41ef2179a94f12		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FE6 4924 bytes
font_01_sfnt_off000070a2.bin
5ce214fe3b24bffb8d1822598079db57fc7b46fffc82fb928f218758591568db		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70A2 16236 bytes

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