Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fee9e34e99f186c…

MALICIOUS

PDF

38.9 KB Created: 2020-09-01 06:50:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4649829bf82c08a94023349098f981c7 SHA-1: 8d1a723096b0a6568777c8162f6e54fce3ba3812 SHA-256: 4fee9e34e99f186c8c282b93591a7fab1d12bc006ff382594aad78c3451f20f4
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

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 'Cyberpunk 2020 character sheet excel' and the malicious URL, suggesting a lure to trick users into clicking the links. The heuristic firings confirm the presence of a malicious redirector link and a large PDF link farm, indicating a phishing or redirection attempt.

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=cyberpunk+2020+character+sheet+excel
    • https://static.usrfiles.com/ugd/b8c837_784bfa14201d4a65a47962ecca116fc2.pdf
    • https://static.usrfiles.com/ugd/b8c837_c22b1b2e990942fdb564d53f60248541.pdf
    • https://static.usrfiles.com/ugd/b8c837_78d89ff0d1164e3c93687683e06fb390.pdf
    • https://static.usrfiles.com/ugd/b8c837_1b998c5c6bf843ad91163d9da3dd33ce.pdf
    • https://static.usrfiles.com/ugd/b8c837_0520b94c0f5e4d7682e4512e462c7469.pdf
    • https://static.usrfiles.com/ugd/4725f1_109d108b84bc4a5f81f56b96e4fce68e.pdf
    • https://static.usrfiles.com/ugd/d5415a_8d8e6cbfb78f4a6c855f21a2c3b28276.pdf
    • https://static.usrfiles.com/ugd/ce14f3_c97100c466bc46209e1d5a37759c3a59.pdf
    • https://static.usrfiles.com/ugd/d775a9_9d112d58e16441be916e0b086f35e388.pdf
    • https://static.usrfiles.com/ugd/b8c837_f9af7a790e93473fa6d4c3bc2c228543.pdf
    • https://static.usrfiles.com/ugd/22bf55_508f0587a488447987a896064b7f0eb0.pdf
    • https://static.usrfiles.com/ugd/33ab24_85c310f2699f4228907f8831b62ffd9b.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_off000059aa.bin
aa55cc6dc54f770d96c387d6e50750bdac2f28923fb7960717fac282c7b3994d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59AA 5576 bytes
font_01_sfnt_off00006c9e.bin
b6b0eb8859e6d3dee337b5ab14ec9007694c55b7586921e623900c52c57ddefa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C9E 10068 bytes

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