Malicious PDF — malware analysis report

Static analysis result for SHA-256 492524028cc4a317…

MALICIOUS

PDF

43.8 KB Created: 2020-08-29 07:49:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d48ee70e391ea0a25ea781f4b39f984 SHA-1: de109f9b38426fd72587a7327c34885fd0943af7 SHA-256: 492524028cc4a317a19b12313b155351c68ff77564a1edb5629b802f8a25738a
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/wix?keyword=what+is+the+frequency+of+light+%2528s-1+that+has+a+wavelength+of+3.86+10-5+cm%253F'. This URL is likely used to direct users to a malicious site. The document also exhibits characteristics of a link farm, with numerous embedded URLs, suggesting an attempt to manipulate search engine results or distribute malicious content. No scripts were extracted, and the document body is heavily obfuscated, but the presence of the malicious redirector is the primary indicator of malicious intent.

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.com/wix?keyword=what+is+the+frequency+of+light+%2528s-1+that+has+a+wavelength+of+3.86+10-5+cm%253F
    • https://static.usrfiles.com/ugd/b8c837_b63e8f85dcc44d25b9d1fcad1a8082d3.pdf
    • https://static.usrfiles.com/ugd/b8c837_fa054a5fcd264abc984fea4c92328c5f.pdf
    • https://static.usrfiles.com/ugd/b8c837_c22188a4d1874ebfb824319da811562e.pdf
    • https://static.usrfiles.com/ugd/b8c837_61aa954e9a2c416e8cf530f4bbf5c2ce.pdf
    • https://static.usrfiles.com/ugd/b8c837_f75bd20688a340b8bd166cdcea3d0ce6.pdf
    • https://static.usrfiles.com/ugd/b8c837_62b740fac0af4c50b7a868af692fb5e9.pdf
    • https://static.usrfiles.com/ugd/b8c837_78d89ff0d1164e3c93687683e06fb390.pdf
    • https://static.usrfiles.com/ugd/b8c837_7f19fccfaa3946ce9e5e591fb39577f8.pdf
    • https://static.usrfiles.com/ugd/b8c837_57ff512707e844248063155b12a8eefa.pdf
    • https://static.usrfiles.com/ugd/b8c837_2150e9f0dea54ed888cc0ed45ba302a3.pdf
    • https://cdn.shopify.com/s/files/1/0432/1568/3743/files/ubuntu_live_usb.pdf
    • https://cdn.shopify.com/s/files/1/0463/1271/8498/files/wekadopibaxepeg.pdf
    • https://cdn.shopify.com/s/files/1/0435/7708/2019/files/41234002754.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_off00005a0f.bin
39bbc010eb3101e3d36e48657eb6ce4c47755b977ac3db92fef04c2d6e8d8176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A0F 6800 bytes
font_01_sfnt_off0000713e.bin
d166a6694fd9d4e14893c84e5807bb52432dd70b10f3cc58fd86b96c7bfb9c49		 pdf-font-stream PDF embedded font (sfnt) at offset 0x713E 14724 bytes

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