Malicious PDF — malware analysis report

Static analysis result for SHA-256 59f7c723ef7dad72…

MALICIOUS

PDF

57.0 KB Created: 2020-08-31 17:59:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 43fcceb0808f23f20c61f08556c97c86 SHA-1: 3ebaaff5d8badc05541c7d445488dcf729e8ef21 SHA-256: 59f7c723ef7dad72403694f31128f7e8059d3a8062c05ee681bad9f98961ea92
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with a critical heuristic firing indicating a link farm designed to redirect users. One of the primary links, 'https://ttraff.ru/wix?keyword=latitude+7290+spec+sheet', is flagged as malicious and likely serves as the initial lure, while the numerous other links on domains like cdn.shopify.com are part of the link farm. The document body, though heavily obfuscated, contains references to these URLs, reinforcing the redirection-based attack pattern.

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=latitude+7290+spec+sheet
    • https://cdn.shopify.com/s/files/1/0457/8669/3798/files/nanaremebu.pdf
    • https://cdn.shopify.com/s/files/1/0440/1774/6070/files/pazunibezojutozoxufom.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30106301206.pdf
    • https://cdn.shopify.com/s/files/1/0432/0778/6657/files/65292723855.pdf
    • https://cdn.shopify.com/s/files/1/0432/8331/6891/files/rokilen.pdf
    • https://static.usrfiles.com/ugd/b8c837_50013010c18e477f8e551885bd23c3ea.pdf
    • https://static.usrfiles.com/ugd/2b3f46_c02645a21c2a498e8bbabdb9bdbc1d2f.pdf
    • https://static.usrfiles.com/ugd/b8c837_9955ba2598f94a998af19fcbe5bb1beb.pdf
    • https://static.usrfiles.com/ugd/69b86f_be1ea75a595d4814821ff008b775db24.pdf
    • https://static.usrfiles.com/ugd/cb2bed_e1991772ab624ea7a6253d49c949c031.pdf
    • https://static.usrfiles.com/ugd/b8c837_766294f9829343e69533363d1e0b2827.pdf
    • https://static.usrfiles.com/ugd/b8c837_ab2ed23df8174c8a945b6e9f43d58aad.pdf
    • https://cdn.shopify.com/s/files/1/0437/9472/7069/files/645286622.pdf
    • https://cdn.shopify.com/s/files/1/0428/1712/6563/files/16287870539.pdf
    • https://cdn.shopify.com/s/files/1/0433/0261/7252/files/3727100919.pdf
    • https://cdn.shopify.com/s/files/1/0436/0906/3586/files/joniwaxi.pdf
    • https://cdn.shopify.com/s/files/1/0432/9809/5272/files/viposow.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_off00008016.bin
6cf3a4feaa67087cfd54b5b8e93dfc3e3565f4228c7b057bc7fddbe970640c1f
pdf-font-stream PDF embedded font (sfnt) at offset 0x8016 5484 bytes
font_01_sfnt_off000092c4.bin
88bfac654012ce0199cdbb0dcf9674adf99463df2741a0ca9b603a6bd6519a79
pdf-font-stream PDF embedded font (sfnt) at offset 0x92C4 15220 bytes
font_02_sfnt_off0000c1b9.bin
ead7fd593d7f5feef6f283420e9b55f8fa4552f107c64b0063d474dd3355abd8
pdf-font-stream PDF embedded font (sfnt) at offset 0xC1B9 16164 bytes