Malicious PDF — malware analysis report

Static analysis result for SHA-256 f356f97c89294b89…

MALICIOUS

PDF

44.3 KB Created: 2020-09-01 04:33:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 831a077c774969984f19251986cdcace SHA-1: 6b0369ba8fad8a88c99fa31eecd033fc8c4872d4 SHA-256: f356f97c89294b897931fbf616e3e33e7b28313aec1fac24f15b610413219f69
120 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a known malicious domain, masquerading as information about a space mission. This heuristic, combined with the presence of numerous other links pointing to external PDF files hosted on static.usrfiles.com, suggests a link farm or redirection tactic. The document body, though heavily obfuscated, contains the URL that triggers the malicious redirector.

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.cc/wix?keyword=rakesh+sharma+space+mission+information
    • https://static.usrfiles.com/ugd/be19e1_16084e7b0cdf4db2812c782a6895b6f9.pdf
    • https://static.usrfiles.com/ugd/b8c837_08e756bc544b49d0911562dc1fd8912a.pdf
    • https://static.usrfiles.com/ugd/0cd019_7f98ce7bcee14e66b99da1fe1e676a8e.pdf
    • https://static.usrfiles.com/ugd/b8c837_205833fb5abc4c7cbb623d19e83daa11.pdf
    • https://static.usrfiles.com/ugd/e8506d_2480f29ec90741bd904c83059210f2b5.pdf
    • https://static.usrfiles.com/ugd/b8c837_165550fb41434e53b50c5e88d018a5fe.pdf
    • https://static.usrfiles.com/ugd/3826db_8f62267b6d4e4445beb3f864b05e4efe.pdf
    • https://static.usrfiles.com/ugd/b8c837_d68fe38d6d5c49fe9c11b01871f5692c.pdf
    • https://static.usrfiles.com/ugd/429b25_324be34461c240ba89ef8419e349deff.pdf
    • https://static.usrfiles.com/ugd/e4bc37_e2748902e47d40be8a6dbf9a5dad2d9a.pdf
    • https://static.usrfiles.com/ugd/4826f5_c07f51f736ce4ed1a658bb7f9bba4f50.pdf
    • https://static.usrfiles.com/ugd/edb4a7_5290474c54774f338cb306e8611af66d.pdf
    • https://static.usrfiles.com/ugd/b8c837_d349c48c4b87436dbe84a3b9d143293c.pdf
    • https://static.usrfiles.com/ugd/516574_6e0b14e9f9014d24b67c3bea509ac3d9.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_off00006fcc.bin
146f1a2ab196e8148afe6f3f53f66858873940a8b27e9e10e6d7e6acbb282e8b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FCC 5292 bytes
font_01_sfnt_off000081aa.bin
3e9712bfec474f46484dc8e51c8cf4fc76f46750699a41a91d9279364d379f1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81AA 10428 bytes

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