Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0b4b80f514a6bf4…

MALICIOUS

PDF

45.7 KB Created: 2020-08-04 17:15:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8b7a216b740c7ed41c4a0c079725d785 SHA-1: 63e936debfb430bf323a6495795c2916cc8fb56c SHA-256: b0b4b80f514a6bf4a3f8792afbe95718001728d3d57c2441136bc1e558437e60
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of the primary links directs to a known malicious redirector at 'ttraff.ru', which is likely used to obscure the final malicious destination. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=introduction+to+geographic+information+systems+pdf+download', reinforcing the malicious redirector's presence. 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.ru/pify?keyword=introduction+to+geographic+information+systems+pdf+download
    • http://lavexite.beachartstudio.org/uploads/1/3/2/6/132695663/8996598.pdf
    • http://files.srabonikar.com/uploads/1/3/2/6/132695620/difebemages_zemowukusofel.pdf
    • http://files.lazyacrescampground.net/uploads/1/3/0/8/130874501/4f0616361.pdf
    • http://files.coachpbasketball.com/uploads/1/3/1/4/131437530/votem-setixefudaxa-buzejusovez-potuvan.pdf
    • http://files.fourpawsdoors.co.uk/uploads/1/3/0/8/130874431/bejegasasokome.pdf
    • https://cdn.shopify.com/s/files/1/0431/8131/0114/files/fozebakoji.pdf
    • https://cdn.shopify.com/s/files/1/0432/8849/4236/files/wovidirefalize.pdf
    • https://cdn.shopify.com/s/files/1/0430/1016/2837/files/rivosikowumoxetuwur.pdf
    • https://cdn.shopify.com/s/files/1/0431/6522/1028/files/33721161836.pdf
    • https://cdn.shopify.com/s/files/1/0432/4950/0328/files/sazewerijixasokig.pdf
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/43868426119.pdf
    • https://cdn.shopify.com/s/files/1/0438/1235/6253/files/lijupiresedu.pdf
    • https://cdn.shopify.com/s/files/1/0436/4235/5865/files/4205396862.pdf
    • https://cdn.shopify.com/s/files/1/0430/6999/7217/files/37657823514.pdf
    • https://cdn.shopify.com/s/files/1/0437/7244/4823/files/wexuleza.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/29121996303.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/voriwatovetizejewadodo.pdf
    • https://www.cancer.gov/coronavirus
    • 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_off00006371.bin
2e875ce0683dccd1cfb588c0f1a3fc3f3596b68caeb6e85d688a4fe1a0f66214
pdf-font-stream PDF embedded font (sfnt) at offset 0x6371 5584 bytes
font_01_sfnt_off00007655.bin
847c83d63f5d89fa50f640716368611ba83827ae85de64c83241e945e8182b47
pdf-font-stream PDF embedded font (sfnt) at offset 0x7655 10748 bytes
font_02_sfnt_off00009b03.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0x9B03 4324 bytes