Malicious PDF — malware analysis report

Static analysis result for SHA-256 466ca9246a78f456…

MALICIOUS

PDF

33.1 KB Created: 2020-08-30 04:52:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c34b306a5590a574894c9da928e4e2d3 SHA-1: 83d5793102fc637295f39ef7ea10fc9846f44017 SHA-256: 466ca9246a78f4567eb467470937ba12937615533d5293ed3372a85edd9bf64a
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/wix?keyword=101+dog+tricks+pdf'. This URL is embedded within the document body, disguised as a '101 dog tricks pdf'. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify domains. The primary malicious URL is the most significant IOC.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/wix?keyword=101+dog+tricks+pdf
    • https://cdn.shopify.com/s/files/1/0431/3006/0955/files/fashion_critical_path_template.pdf
    • https://cdn.shopify.com/s/files/1/0437/1021/8391/files/24276551188.pdf
    • https://cdn.shopify.com/s/files/1/0428/7656/7711/files/luropupa.pdf
    • https://static.usrfiles.com/ugd/409ca8_0d88c3a445f241c6a947f3d47a307dbb.pdf
    • https://cdn.shopify.com/s/files/1/0430/9277/0977/files/parikug.pdf
    • https://cdn.shopify.com/s/files/1/0439/1449/4107/files/havasupai_hike_guide.pdf
    • https://static.usrfiles.com/ugd/e4a001_6d2b1f653f5742849a3d8aee7d60758b.pdf
    • https://static.usrfiles.com/ugd/b8c837_ddf15af9aa0248c1a4f9dcf97db101ae.pdf
    • https://static.usrfiles.com/ugd/9219f8_3aa2d93c452541b78d28deed8d808594.pdf
    • https://static.usrfiles.com/ugd/b8c837_8657b16b46ef4a44aa561a4287601a24.pdf
    • https://static.usrfiles.com/ugd/585b1d_cae3b00ea33a48d99da835d4b8fbc32d.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_off00004617.bin
6c669aff4b6f844968a78babaf504bb3c7bb12c717dff04a81923e6661f8f9d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4617 5244 bytes
font_01_sfnt_off00005806.bin
0bb8aa5aeed3744a58fb5f4cc215381e6ebee5deebb1c0e4578fb62f97c0d191		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5806 9428 bytes

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