Malicious PDF — malware analysis report

Static analysis result for SHA-256 f130bf18f856019f…

MALICIOUS

PDF

36.8 KB Created: 2020-07-24 20:55:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7dc001c65010679ed965c0ca79a8c67f SHA-1: 118cd1ba602ac4da970bbc69b6567087bd478d6d SHA-256: f130bf18f856019f3fd71cfae63ba0837f3989b703621a4a44fd832a62f6807e
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous embedded links, with a critical heuristic firing indicating it's a malicious redirector. One of the primary links directs to 'ttraff.com', a known malicious redirector. The document body, though heavily obfuscated, appears to reference 'Acids and alkalis ks3 worksheet tes', suggesting a lure to disguise malicious intent. The presence of many external links, including to Shopify, indicates a link farm strategy to distribute malicious content.

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.com/pify?keyword=acids+and+alkalis+ks3+worksheet+tes
    • http://files.anschutznorthamerica.com/uploads/1/3/2/6/132695472/duvoso-noruluwexalir-gapoj-gutewiwiweg.pdf
    • http://files.athenianenterprisesllc.com/uploads/1/3/0/9/130969211/degolodawan_xugulomadukadu_pumipemigupoj.pdf
    • http://files.wildchildcoffeeproject.com/uploads/1/3/0/8/130814611/1875165.pdf
    • http://files.audienceseurope.com/uploads/1/3/0/7/130776142/sigusupetoromovomo.pdf
    • http://files.audienceseurope.com/uploads/1/3/0/7/130776142/sigusupetoromovomo
    • https://cdn.shopify.com/s/files/1/0432/9635/8565/files/74901927755.pdf
    • https://cdn.shopify.com/s/files/1/0432/3826/0898/files/pedibija.pdf
    • https://cdn.shopify.com/s/files/1/0429/5639/0551/files/66094728650.pdf
    • https://cdn.shopify.com/s/files/1/0432/8580/7269/files/57754782588.pdf
    • https://cdn.shopify.com/s/files/1/0433/8070/3382/files/dolapebomitudof.pdf
    • https://cdn.shopify.com/s/files/1/0437/4937/6149/files/jodujojewezizajumeximuva.pdf
    • https://cdn.shopify.com/s/files/1/0433/6992/2714/files/linifogudavosebaduxezak.pdf
    • https://cdn.shopify.com/s/files/1/0432/9691/5621/files/gebosipexixodifejoga.pdf
    • https://cdn.shopify.com/s/files/1/0436/4324/0606/files/lepap.pdf
    • https://cdn.shopify.com/s/files/1/0431/0473/1300/files/funutojukogobalefobakeb.pdf
    • https://cdn.shopify.com/s/files/1/0428/7630/5564/files/2635522223.pdf
    • https://cdn.shopify.com/s/files/1/0435/9720/1567/files/51371651741.pdf
    • https://cdn.shopify.com/s/files/1/0439/3756/2779/files/18314701271.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_off000055da.bin
156d861eae072d97b4a53d51bcbf578cf9bb2d05c0216969a8dce8c594610c76
pdf-font-stream PDF embedded font (sfnt) at offset 0x55DA 5124 bytes
font_01_sfnt_off0000673c.bin
b4d3893ea0cd24d3bfe8d6eea9b9e6585915549f2bfd44375180dc8e749f7ba0
pdf-font-stream PDF embedded font (sfnt) at offset 0x673C 9004 bytes