Malicious PDF — malware analysis report

Static analysis result for SHA-256 5514501cc507cc3a…

MALICIOUS

PDF

41.2 KB Created: 2020-08-30 01:38:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ae2fc38ec8cb4680b7004806b8b697f0 SHA-1: dceeac21becc94871713e25748b2bf161272c27f SHA-256: 5514501cc507cc3a8facdb46d1f49672c34c3e168a9fc867e3c65b001b933fc2
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.me/wix?keyword=quinton+hillocks+porn'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links hosted on 'static.usrfiles.com'. The document body, though heavily obfuscated, contains the same malicious URL. This suggests the primary goal is to redirect the user to a malicious site, likely for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.me/wix?keyword=quinton+hillocks+porn
    • https://static.usrfiles.com/ugd/b8c837_76d0cdb03cbe4eefb51f5c5877cff0e5.pdf
    • https://static.usrfiles.com/ugd/b8c837_3d59396c198f4cf39d4cf8d6817daf74.pdf
    • https://static.usrfiles.com/ugd/3e87bf_d3abb3c1a6794fdfa9f37902e9f9e646.pdf
    • https://static.usrfiles.com/ugd/63d3ad_65ae7932540643ac918941925e7c7a73.pdf
    • https://static.usrfiles.com/ugd/bb13a2_0c39093670ec4f76be44f3e72b993d93.pdf
    • https://static.usrfiles.com/ugd/b8c837_f8247b8008014c66982ddd0acc608df6.pdf
    • https://static.usrfiles.com/ugd/49be48_07fdae5915ca46ba8fb4d4f90102b221.pdf
    • https://static.usrfiles.com/ugd/09273f_a2dae8abc78249958fad6bf9b7093aa9.pdf
    • https://static.usrfiles.com/ugd/b8c837_3818fe0eb3334579ad71dfd449b18d41.pdf
    • https://static.usrfiles.com/ugd/b8c837_def380d5552e418d82c97d6d4a3e69fa.pdf
    • https://cdn.shopify.com/s/files/1/0433/9020/6115/files/54064582775.pdf
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/gazujekelusikadak.pdf
    • https://static.usrfiles.com/ugd/fd30ac_5244876f2e0f4a5087468e1681ab2258.pdf
    • https://static.usrfiles.com/ugd/b8c837_249d48c19f4e44d79ddff24efe81c97d.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000057c4.bin
f244152f1735ecea2e0015db16f4eec7c19935d3b03785c1fb693a5a6caaf07b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57C4 2988 bytes
font_01_sfnt_off00006274.bin
380059612919628f02f03034e9b9c4b003473c379fc2498fcbbcd244214b3a15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6274 4936 bytes
font_02_sfnt_off00007338.bin
052325ad18ba18c7d3cdc50b17f9db49e8df99ad02661a6e23d3761e767ccb2c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7338 10344 bytes

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