Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6b5bd5e0ffae2d3…

MALICIOUS

PDF

50.9 KB Created: 2020-08-29 15:08:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8838f361164aef9422fdff99568dfd23 SHA-1: df7b191b7473aa88e78f5d3e69dacb4f841e466c SHA-256: e6b5bd5e0ffae2d39651eabcb716507e4c90df48b7891e13ec3f259cefdc2338
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.ru'. This indicates an attempt to direct the user to a malicious site, likely for further exploitation or credential harvesting. The document also contains a PDF link farm heuristic, suggesting a broader campaign to distribute malicious content. No scripts were extracted, but the presence of the malicious URL is sufficient evidence for this assessment.

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=abraham+maslow+self+actualization+pdf
    • https://static.usrfiles.com/ugd/79cb75_0e594db26bf44a03893f575dd1fcc434.pdf
    • https://static.usrfiles.com/ugd/913720_1530ae8c7dad4007964aaa3b709787c9.pdf
    • https://static.usrfiles.com/ugd/b8c837_455508254f8b4f8782217f181e537766.pdf
    • https://cdn.shopify.com/s/files/1/0431/1754/3588/files/81015701301.pdf
    • https://static.usrfiles.com/ugd/b8c837_d1edcb8a83c94dfea2c829b95e17ac54.pdf
    • https://static.usrfiles.com/ugd/b8c837_fb081d87cd404d79988cd52e389d41e2.pdf
    • https://static.usrfiles.com/ugd/b8c837_d338ef3bfea54650b258c3a3c51d4b70.pdf
    • https://static.usrfiles.com/ugd/b8c837_6aecc89c16794de0bd20c4facf33b5aa.pdf
    • https://static.usrfiles.com/ugd/b8c837_ad486d779b744cffbf4b9b74eba9bf46.pdf
    • https://static.usrfiles.com/ugd/b8c837_4275fff636264bcd9c8b473c06ad75c9.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_off00008815.bin
2ee5427139b4195b72f670aa6a93fe2b57069691553c7749f3d0362ae8e6fb8e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8815 5664 bytes
font_01_sfnt_off00009b45.bin
58cb19cff5e2ea8dcfe98e604a88b32aa839c58befd1a134e138c5a30aa410f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B45 10560 bytes

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