Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b6ad9be5be5175a…

MALICIOUS

PDF

40.4 KB Created: 2020-08-17 15:52:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5af00a008a6b7a0d2bd8468d90a4fa36 SHA-1: b07397320dedf2d007f66e630111e7d67d7f48e3 SHA-256: 4b6ad9be5be5175ae9aacffd98d1f835e5ae1c1d7ce2e8100d633c42d6310160
136 Risk Score

Malware Insights

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

The PDF contains a lure for hotel registration with an implied urgency, directing users to click a link. This link, 'https://ttraff.cc/pify?keyword=form+c+hotel+registration', is identified as a malicious redirector. The document also features a large number of embedded links, many pointing to Shopify domains, likely as part of a link farm to improve search engine ranking for malicious content. No scripts were extracted from this sample.

Heuristics 5

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.cc/pify?keyword=form+c+hotel+registration
    • http://gazibon.lihmsisters.org/uploads/1/3/0/7/130775403/ccfaa055be0.pdf
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/65984066632.pdf
    • https://cdn.shopify.com/s/files/1/0435/5801/1035/files/supplementary_complementary_vertical_and_adjacent_angles_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0429/6992/3740/files/25772244355.pdf
    • https://cdn.shopify.com/s/files/1/0433/8404/5719/files/93376545540.pdf
    • https://cdn.shopify.com/s/files/1/0430/4997/5959/files/74740141158.pdf
    • https://cdn.shopify.com/s/files/1/0438/2975/6066/files/24336611868.pdf
    • https://cdn.shopify.com/s/files/1/0432/9462/1862/files/83820525196.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/96056065099.pdf
    • https://cdn.shopify.com/s/files/1/0435/9349/8787/files/dasiwigaxupuzowusul.pdf
    • https://cdn.shopify.com/s/files/1/0429/5104/9370/files/fistula_perianal_causas.pdf
    • https://cdn.shopify.com/s/files/1/0429/9508/9571/files/estadistica_descriptiva_libro_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/84885437304.pdf
    • https://cdn.shopify.com/s/files/1/0437/5737/1546/files/fedesonigesoledelivabibej.pdf
    • https://cdn.shopify.com/s/files/1/0451/4122/9733/files/historia_de_la_tabla_periodica_resumida.pdf
    • https://cdn.shopify.com/s/files/1/0429/7578/9215/files/99890610510.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_off00006131.bin
1bef33d76c323b8133776ee6c1f93c2194965030989b7dc0634a0193b0f0d370
pdf-font-stream PDF embedded font (sfnt) at offset 0x6131 5168 bytes
font_01_sfnt_off000072a3.bin
ea692e9c7d13aa4709ebfc783b5bde09cbb6a449a87bef89a1f422b2013db4a8
pdf-font-stream PDF embedded font (sfnt) at offset 0x72A3 10024 bytes