Malicious PDF — malware analysis report

Static analysis result for SHA-256 feaf6e49373f80b1…

MALICIOUS

PDF

48.8 KB Created: 2020-08-29 12:43:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 88788168e787fe14878ea353023c9fcc SHA-1: f626b1a17e8ba2a5d3f8e6f7043394b00e644a29 SHA-256: feaf6e49373f80b100805cfba2706c258ed4fffcd8a48e1d827cef51c62b6962
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external PDF links, many hosted on Shopify. The primary malicious URL identified is https://ttraff.ru/wix?keyword=world+english+1+national+geographic+pdf, which likely serves as the initial lure or redirector. The large number of embedded links suggests an attempt to manipulate search engine results or distribute further 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.ru/wix?keyword=world+english+1+national+geographic+pdf
    • https://cdn.shopify.com/s/files/1/0440/3943/8501/files/95814461619.pdf
    • https://cdn.shopify.com/s/files/1/0431/5670/1346/files/28234135298.pdf
    • https://cdn.shopify.com/s/files/1/0434/5721/6678/files/organisational_behaviour_and_management_fellenz.pdf
    • https://cdn.shopify.com/s/files/1/0438/4351/8629/files/74695372441.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85755015361.pdf
    • https://cdn.shopify.com/s/files/1/0432/7368/3112/files/rafagagupo.pdf
    • https://cdn.shopify.com/s/files/1/0439/0577/7832/files/vejeletumosepejoko.pdf
    • https://cdn.shopify.com/s/files/1/0432/9380/2646/files/kekoriluwesadumezozu.pdf
    • https://cdn.shopify.com/s/files/1/0432/1627/3563/files/64581033510.pdf
    • https://cdn.shopify.com/s/files/1/0428/4402/9084/files/visiguva.pdf
    • https://cdn.shopify.com/s/files/1/0439/2042/5115/files/setivugibuxevudukisoxema.pdf
    • https://cdn.shopify.com/s/files/1/0429/2752/1948/files/jodorewemodegu.pdf
    • https://cdn.shopify.com/s/files/1/0434/6124/7129/files/69849271464.pdf
    • https://static.usrfiles.com/ugd/b8c837_2efc665bfc4e40a38281da6a5ea54fe8.pdf
    • https://static.usrfiles.com/ugd/b8c837_f0b2e80b34c54a74b32ebd3bea2f8190.pdf
    • https://static.usrfiles.com/ugd/b8c837_17db77abc1ae44e0948b522787e92986.pdf
    • https://static.usrfiles.com/ugd/b8c837_981305fa42554731abc61eb0488c70f6.pdf
    • https://static.usrfiles.com/ugd/b8c837_6ac85aa85a6c4456be04a1ff789b1937.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006491.bin
f391ea6cc51ab254b53dc9387b5a2b54c96ca4bcff02e1d6dc40aa2a5de253b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x6491 5480 bytes
font_01_sfnt_off0000774b.bin
cd64790cbb82a36c28e0385b2758af9dc89813c5bfb11550749cdd89e274307f
pdf-font-stream PDF embedded font (sfnt) at offset 0x774B 10704 bytes
font_02_sfnt_off00009b51.bin
30faa2b4d356db37990155777f2915c060c2997220b16d932a93d940a37bd98b
pdf-font-stream PDF embedded font (sfnt) at offset 0x9B51 17700 bytes