Malicious PDF — malware analysis report

Static analysis result for SHA-256 eadb157d4d5a48fa…

MALICIOUS

PDF

36.4 KB Created: 2020-08-30 20:42:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 70e249624c4574f08520bc250edc3067 SHA-1: 1d8a6be226c3ab9833544595d1f5d79ffb4d07db SHA-256: eadb157d4d5a48fa81610d0f3067da7636c3a22141639508fd5335841a8fd07f
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to mathematical operations and references to wkhtmltopdf, suggesting a lure document. The presence of a malicious redirector indicates an attempt to lead the user to a harmful site, likely for further exploitation or credential harvesting.

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=tam+say%25C4%25B1l%25C4%25B1+kesirlerde+toplama
    • https://cdn.shopify.com/s/files/1/0437/7001/9994/files/dezekeviwunelagereg.pdf
    • https://cdn.shopify.com/s/files/1/0439/3297/5272/files/xogidodijefomovonev.pdf
    • https://cdn.shopify.com/s/files/1/0433/0602/5128/files/1091098797.pdf
    • https://cdn.shopify.com/s/files/1/0435/2222/8379/files/fajasasalokit.pdf
    • https://static.usrfiles.com/ugd/f515ca_7306e65b2ab04f008c90c0f8a8a22e54.pdf
    • https://static.usrfiles.com/ugd/b8c837_3965226ac8f9493e9a7333be8078ceb5.pdf
    • https://static.usrfiles.com/ugd/345929_c6bf18b3dc8240e7a39a587f0e818222.pdf
    • https://static.usrfiles.com/ugd/b8c837_4180453556b74d8f9be19202241c0252.pdf
    • https://static.usrfiles.com/ugd/b8c837_960112edbdbf4e43a1dc4431a4aea00f.pdf
    • https://static.usrfiles.com/ugd/7ff653_a00e60367b9a4693a6bff7b756afcc11.pdf
    • https://static.usrfiles.com/ugd/b8c837_8c683f470e8d4d2c9afb00afbd6570fe.pdf
    • https://static.usrfiles.com/ugd/4f270c_ad2a5a7b0048471eaa07485775bd1340.pdf
    • https://cdn.shopify.com/s/files/1/0428/2001/0140/files/dragonballz_flash_game.pdf
    • https://cdn.shopify.com/s/files/1/0432/6604/8165/files/76240083393.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_off00004e63.bin
f075175d91817a26065751f6eb48245ba5497a18d18e62998dcb91d892b3b8b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E63 5252 bytes
font_01_sfnt_off00006032.bin
79e17ab4138d45c178067e150cb2fe2f03ce874d10622779ba2b01ccf9c66d02		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6032 10868 bytes

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