Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ff449008c43e2c5…

MALICIOUS

PDF

41.0 KB Created: 2020-08-09 08:56:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 499d13ea35ccddc127eaebed81712780 SHA-1: 01832393e06635f4d08edd18e1c836ade42b3172 SHA-256: 1ff449008c43e2c5dbd11a82691bd57bcec1744661b615ff67afb999c59104d0
120 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, including a known malicious redirector at 'ttraff.ru'. The document body, though heavily obfuscated, contains references to the redirector URL and other Shopify-hosted PDFs, suggesting a link farm or redirection scheme. The primary intent appears to be directing users to malicious infrastructure via these links.

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=vowel+sounds+ipa+pdf
    • http://files.brareabj.org/uploads/1/3/1/4/131453574/50bbcb6abf8926a.pdf
    • http://files.godandjonathan.com/uploads/1/3/1/6/131607000/5368676.pdf
    • http://files.freelancemarketingcopy.com/uploads/1/3/0/8/130874119/wipekawajakozaved.pdf
    • https://cdn.shopify.com/s/files/1/0430/3552/5282/files/rafawewavarenuxalofodi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/15138334831.pdf
    • https://cdn.shopify.com/s/files/1/0429/7372/4825/files/losatazemipu.pdf
    • https://cdn.shopify.com/s/files/1/0432/7309/3288/files/lupilopevew.pdf
    • https://cdn.shopify.com/s/files/1/0427/7692/0220/files/nitoku.pdf
    • https://cdn.shopify.com/s/files/1/0439/0676/0856/files/petemebisarolibolafeg.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tedogunugovosilogupex.pdf
    • https://cdn.shopify.com/s/files/1/0433/1352/8987/files/libelurakugamosaxevu.pdf
    • https://cdn.shopify.com/s/files/1/0432/0742/6216/files/80099415630.pdf
    • https://cdn.shopify.com/s/files/1/0432/9078/8000/files/adobe_acrobat_reader_dc_reduce_size.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/1/0439/0676/0856/files/petemebisaro

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d89.bin
31de7e9d41eb14ddf6132b037bd265b35f75f9b6645b436962540d2d7cd6cf4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D89 4996 bytes
font_01_sfnt_off00006eb5.bin
b79e897cb97ab3bcc98c13309786b75ceb86047cfcfa566451a199e9100f8f26		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EB5 12184 bytes

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