Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffb5ae9dff71c95f…

MALICIOUS

PDF

43.1 KB Created: 2020-09-01 15:19:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c0fdba513fb5cc535a3c8c2b6bfd8a16 SHA-1: 9515414aa9e56dae857b4042e54304ebc9854610 SHA-256: ffb5ae9dff71c95f5396b1d07929dce10ae645daee3d82186d2d3509aa3203cd
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links pointing to various PDF files hosted on Shopify, suggesting an attempt at SEO poisoning or link farming. Additionally, a critical heuristic identified a direct link to a known malicious redirector infrastructure at `https://ttraff.ru/wix?keyword=ffty+fact+sheet`. This indicates the document is designed to lure users to malicious sites, likely for phishing or malware distribution.

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.ru/wix?keyword=ffty+fact+sheet
    • https://cdn.shopify.com/s/files/1/0435/4785/2959/files/bamakaravukewoluxo.pdf
    • https://cdn.shopify.com/s/files/1/0436/9920/8346/files/alberic_de_bordeleaux_guide.pdf
    • https://cdn.shopify.com/s/files/1/0430/1229/2767/files/importance_of_feedback_in_effective_communication.pdf
    • https://cdn.shopify.com/s/files/1/0428/8898/6787/files/46507077826.pdf
    • https://cdn.shopify.com/s/files/1/0431/2956/9429/files/11464851468.pdf
    • https://static.usrfiles.com/ugd/9e53d4_f0e2438738e147a1b117a7c8c0744efe.pdf
    • https://static.usrfiles.com/ugd/69695d_99a0517aabc84d8eb565bc874e9f9b08.pdf
    • https://static.usrfiles.com/ugd/b8c837_59576f33e5104edd9ab1cbd62367a1f5.pdf
    • https://cdn.shopify.com/s/files/1/0434/7399/3890/files/xfinity_tv_guide_delray_beach.pdf
    • https://cdn.shopify.com/s/files/1/0430/5272/8474/files/56080949286.pdf
    • https://cdn.shopify.com/s/files/1/0435/0096/1947/files/70374380055.pdf
    • https://cdn.shopify.com/s/files/1/0436/5526/6457/files/nolibiwenax.pdf
    • https://cdn.shopify.com/s/files/1/0430/5318/7221/files/siruvegijosi.pdf
    • https://static.usrfiles.com/ugd/808d8c_72e5aa6b53794c248af0b6a20be393dc.pdf
    • https://static.usrfiles.com/ugd/b8c837_70397251cb4b4e688b91709fcbc6f7f5.pdf
    • https://static.usrfiles.com/ugd/b914b5_69aeaeedbced4f3b97498b15191391ff.pdf
    • https://static.usrfiles.com/ugd/79cb75_679604fb9e2c45b4be003a4755d5428a.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_off00006572.bin
41ed3744641dcd5aeec8ed176d5a6a58feff7e51988e69108c4f2151af5cc1f6
pdf-font-stream PDF embedded font (sfnt) at offset 0x6572 4900 bytes
font_01_sfnt_off00007630.bin
1adde8285436bd79677b462a0bf1cbd6a302b4ccb57df32310992333a57e48fe
pdf-font-stream PDF embedded font (sfnt) at offset 0x7630 12596 bytes