Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c6c68aa7b44792f…

MALICIOUS

PDF

43.8 KB Created: 2020-09-18 01:47:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 969877986d0b01a627a1cac8dce79500 SHA-1: 31919be8318889d38a14212b1cd7abd8995a049f SHA-256: 3c6c68aa7b44792fae29866f0aa5a036945347a13de09964c53e7508ff7ef42d
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to a high number of embedded links, a technique often used to redirect users to malicious sites. One critical heuristic flagged a link to a known malicious redirector infrastructure at 'https://ttraff.club/wix?keyword=old+neighborhood+restaurant+still+open'. Another heuristic indicated a PDF link farm, with many links pointing to Shopify domains, suggesting an attempt to obscure the final malicious destination.

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.club/wix?keyword=old+neighborhood+restaurant+still+open
    • https://cdn.shopify.com/s/files/1/0432/7823/7856/files/kadosodiwedodi.pdf
    • https://cdn.shopify.com/s/files/1/0434/2785/6536/files/melul.pdf
    • https://cdn.shopify.com/s/files/1/0438/8497/0139/files/76621254053.pdf
    • https://cdn.shopify.com/s/files/1/0434/7510/7990/files/kodixutajanudivonu.pdf
    • https://cdn.shopify.com/s/files/1/0428/7453/6103/files/xezodenapisufawosifuzu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nezaneseku.pdf
    • https://cdn.shopify.com/s/files/1/0436/2554/5890/files/chemistry_a_molecular_approach_3rd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0427/9091/2159/files/16857365202.pdf
    • https://cdn.shopify.com/s/files/1/0429/9161/6153/files/1._7._10_magic_mods.pdf
    • https://cdn.shopify.com/s/files/1/0432/0401/8336/files/list_of_capitals_and_currencies_of_countries.pdf
    • https://cdn.shopify.com/s/files/1/0430/7792/7063/files/gigetalane.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/
    • https://cdn.shopify.com/s/files/1/0438/8497/0139/files/76621254

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e34.bin
55a8b017256e2c8ecc139552e874693e398c15c4d8a97ace7b601528cdf14727
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E34 5388 bytes
font_01_sfnt_off00008070.bin
6a9a10e65a7a22725f26f23a66eeef3988e8e30e21fb932399490cf8e166e3e8
pdf-font-stream PDF embedded font (sfnt) at offset 0x8070 9908 bytes