Malicious PDF — malware analysis report

Static analysis result for SHA-256 92a5ef2970ce1481…

MALICIOUS

PDF

33.2 KB Created: 2020-08-18 14:21:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ee03cc77b28a73a5792ab55943d2809 SHA-1: 690fbd17aa012b640d30e04ae9aa8a28db70e27b SHA-256: 92a5ef2970ce1481b342c10946e91c2cd75bfa172c54e7f6df7ef85a3d018e78
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=metallica+enter+sandman+guitar+sheet+music'. The document body also contains this URL and a link to a Shopify domain, suggesting a lure to download further content. The presence of multiple embedded links, many pointing to Shopify, indicates a link farm strategy to obscure the malicious redirector. 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=metallica+enter+sandman+guitar+sheet+music
    • http://lomomar.humanityreboxed.org/uploads/1/3/0/7/130775403/1409338.pdf
    • http://files.bluffsplus.com/uploads/1/3/0/8/130814460/53b61b.pdf
    • https://cdn.shopify.com/s/files/1/0432/6745/7188/files/poledofewikatikad.pdf
    • https://cdn.shopify.com/s/files/1/0432/7990/9028/files/43326363752.pdf
    • https://cdn.shopify.com/s/files/1/0428/3337/9484/files/grade_10_12_biology_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0434/8959/1461/files/56980856378.pdf
    • https://cdn.shopify.com/s/files/1/0438/6911/0432/files/37134927317.pdf
    • https://cdn.shopify.com/s/files/1/0433/7913/0531/files/samsung_galaxy_ace_s5830i_bootloader.pdf
    • https://cdn.shopify.com/s/files/1/0435/8694/5187/files/murexirameroxosivud.pdf
    • https://cdn.shopify.com/s/files/1/0428/5743/1199/files/ase_guidelines_regurgitation.pdf
    • https://cdn.shopify.com/s/files/1/0440/8881/9864/files/historia_de_los_aines.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_off000042bc.bin
6ee9ddee02b96573da15c108bd316ee07d2ef8391a845d399711391b2890df61		 pdf-font-stream PDF embedded font (sfnt) at offset 0x42BC 5356 bytes
font_01_sfnt_off000054c4.bin
a48cf436f4652a0d71a5003bf5da4817a5458f9821ad49d2f808b6a566629ed5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54C4 10504 bytes

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