Malicious PDF — malware analysis report

Static analysis result for SHA-256 9985e6f5a28e237b…

MALICIOUS

PDF

37.6 KB Created: 2020-08-21 15:16:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3ee0062382d69a2e132f8e23fae54686 SHA-1: c6cbf607ef08d3331e1174fec4009fd0e16e6c27 SHA-256: 9985e6f5a28e237bf5c012290d8fb552909eaec97a9e20ec5ef70e592d343677
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it points to malicious infrastructure. The document body, though heavily obfuscated, contains the URL https://ttraff.com/pify?keyword=a+level+economics+revision+guide+edexcel, which is also listed as a malicious redirector. The PDF also contains a PDF_SEO_LINK_FARM heuristic, suggesting it is part of a larger link farm, with many links pointing to shopify.com domains, likely to improve search engine ranking for 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=a+level+economics+revision+guide+edexcel
    • http://files.reveal-and-heal.com/uploads/1/3/1/6/131606343/xeroba.pdf
    • https://cdn.shopify.com/s/files/1/0434/5331/7272/files/1276149164.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/229905594.pdf
    • https://cdn.shopify.com/s/files/1/0430/1121/1417/files/21281177558.pdf
    • https://cdn.shopify.com/s/files/1/0434/5469/3537/files/axolotl_resumen.pdf
    • https://cdn.shopify.com/s/files/1/0438/3087/0173/files/29882053400.pdf
    • https://cdn.shopify.com/s/files/1/0428/7637/1110/files/risk_management_planning_process.pdf
    • https://cdn.shopify.com/s/files/1/0436/9576/7706/files/parker_pneumatic_cylinder_catalogue.pdf
    • https://cdn.shopify.com/s/files/1/0432/5706/9721/files/jixawotevozodozodupuxit.pdf
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/kifoka.pdf
    • https://cdn.shopify.com/s/files/1/0431/4054/6721/files/mulajupivileka.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_off00004b1e.bin
ead345defbfcbc90bcff8f39bef0e78cb6c69453f99134098d1175ce3500b976		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4B1E 5164 bytes
font_01_sfnt_off00005c99.bin
3fab41a86122b60edad343b5795a1628dba5dae75429fd342ff4c7dfe527b60d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C99 14772 bytes

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