Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bacec0d93b71e43…

MALICIOUS

PDF

33.1 KB Created: 2020-08-20 11:58:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6f15ac984f0b7c5caf976d2b24cc59a9 SHA-1: 8c57dc4b65985cf1c78ab5319882618ca6a50e28 SHA-256: 2bacec0d93b71e43f0d781f195c01d1d90a73c645c27688fca7e4545a04385bd
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, many pointing to PDF files hosted on Shopify. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is likely the primary malicious payload delivery mechanism. The presence of a large link farm suggests an attempt to either distribute malware or manipulate search engine results. No scripts were extracted from this sample.

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=bro+sammy+nsem+foo
    • http://tegemajis.samanthagagnon.com/uploads/1/3/1/4/131407241/jiwamelezu.pdf
    • http://files.freshstockjapan.com/uploads/1/3/1/4/131453633/1119338.pdf
    • https://cdn.shopify.com/s/files/1/0431/8085/1362/files/swot_analysis_template.pdf
    • https://cdn.shopify.com/s/files/1/0433/0507/4838/files/2080295144.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kupesuditijativerawepafu.pdf
    • https://cdn.shopify.com/s/files/1/0431/6299/2799/files/73714370253.pdf
    • https://cdn.shopify.com/s/files/1/0435/8832/1435/files/applied_maths_3.pdf
    • https://cdn.shopify.com/s/files/1/0437/1690/3080/files/37010491179.pdf
    • https://cdn.shopify.com/s/files/1/0431/5650/4744/files/pamutitexojo.pdf
    • https://cdn.shopify.com/s/files/1/0432/6942/3269/files/farunejo.pdf
    • https://cdn.shopify.com/s/files/1/0428/8118/8003/files/zotulap.pdf
    • https://cdn.shopify.com/s/files/1/0428/0107/0247/files/33370563039.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_off0000466d.bin
d92e8a2f93fb539fe2db9c42e218f52629b4f4fbd87613f70dd101a2931a3904		 pdf-font-stream PDF embedded font (sfnt) at offset 0x466D 5032 bytes
font_01_sfnt_off0000577f.bin
8ca3ee9e39e22dd8043fd6360069171d1c8bbf177620056780fff42238f153ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x577F 9608 bytes

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