Malicious PDF — malware analysis report

Static analysis result for SHA-256 25a7afd5d07d26ec…

MALICIOUS

PDF

48.5 KB Created: 2020-08-31 03:30:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 59376e3d208adaebc000b53822890b57 SHA-1: 6ac5f328c23a3705e6c4a99debddc519cdcc6408 SHA-256: 25a7afd5d07d26ec45727dd282eebcba07a0e7e7930bebc2f895844d32de7be0
120 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.club, which is likely intended to lead the user to a phishing or malware distribution site. The document body, though heavily obfuscated, contains the same malicious URL and references to a TV show, suggesting a social engineering lure. The presence of numerous external PDF links also indicates a link farm, a common tactic for SEO poisoning or distributing malicious content.

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.club/wix?keyword=knowing+brother+episode+guide
    • https://static.usrfiles.com/ugd/0cd3a8_13a3d913c9f946feaa96455651ebc87f.pdf
    • https://static.usrfiles.com/ugd/9d869b_5dfe9657c8fb4366b57858038b504d38.pdf
    • https://static.usrfiles.com/ugd/2274a7_dddcc4f84ab84039b6d5668cc2d5e982.pdf
    • https://static.usrfiles.com/ugd/0cd3a8_ed06aafac84b41a89e32f4d16e87504f.pdf
    • https://static.usrfiles.com/ugd/5926b4_0fec2361d07940949b64bce168300164.pdf
    • https://static.usrfiles.com/ugd/26481d_a033f387417e4dde81baa96f355bd1af.pdf
    • https://static.usrfiles.com/ugd/3826db_ca619dd6b80c40e6aaf6cb69b2345c7c.pdf
    • https://static.usrfiles.com/ugd/90423f_0cbc1a1fc78c4df1bc2f0b95fd5452a0.pdf
    • https://static.usrfiles.com/ugd/b8c837_b6d52c594b6346f6a852138a574443f8.pdf
    • https://static.usrfiles.com/ugd/b58d21_44441b1e38d74263a0f20dafd9d2f88e.pdf
    • https://static.usrfiles.com/ugd/b8c837_bf74f1ab28294179afd852799f9906ea.pdf
    • https://cdn.shopify.com/s/files/1/0429/5147/5351/files/jibilutijulodenijufer.pdf
    • https://cdn.shopify.com/s/files/1/0434/0157/6602/files/rimworld_insect_meat.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_off00006ffa.bin
2238a3e0e0d6093e254a3c6f279a33651cbbeefb58ab2fe8f248a174e5ee2f6d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FFA 4424 bytes
font_01_sfnt_off00007f40.bin
78cb52640ac531453328dcafd701604258609e845d2beee4bf0de097bc9e73e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F40 5180 bytes
font_02_sfnt_off000090ec.bin
cd9ff89fc8177fca1cce41a53ade8b23279ecb940ab48a408380959611d66b97		 pdf-font-stream PDF embedded font (sfnt) at offset 0x90EC 10116 bytes

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