MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=curso+de+direito+processual+civil+fredie+didier+jr+pdf'. This indicates the document's primary purpose is to redirect users to a potentially harmful site. Additionally, another critical heuristic identified a PDF link farm, suggesting an attempt to manipulate search engine results or distribute multiple malicious files. The ML classifier also strongly flagged this PDF as malicious.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 4
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PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINKPDF 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.
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Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall 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.
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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Embedded URL info EMBEDDED_URLOne 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=curso+de+direito+processual+civil+fredie+didier+jr+pdf
- https://static.usrfiles.com/ugd/b8c837_92285239dda64af3bd69be43a5aa0015.pdf
- https://static.usrfiles.com/ugd/0c268c_ef9def4301eb4a748b1ddfb2c1d63672.pdf
- https://static.usrfiles.com/ugd/b8c837_ce2eb99890cb4ec88b7d458bb6da8de4.pdf
- https://static.usrfiles.com/ugd/b8c837_7af8bd65cb784c87af0e8e52cf512c72.pdf
- https://static.usrfiles.com/ugd/930050_b5a431d278a74e159b4e3c5460c149a3.pdf
- https://static.usrfiles.com/ugd/affaa6_b8fa76c30dfa414d9fb2dffd08b5376d.pdf
- https://static.usrfiles.com/ugd/b8c837_4f8db4302e5f4fa99060525ba0e440dd.pdf
- https://static.usrfiles.com/ugd/286fb8_c4a49e978d294b44be2498927406d4bd.pdf
- https://static.usrfiles.com/ugd/ae059d_0063e45808364ae384c16733b1ca131a.pdf
- https://static.usrfiles.com/ugd/b8c837_12aa3bd03efe45c0a2117a676696cf7e.pdf
- https://static.usrfiles.com/ugd/72b0e7_146f40c6a31143ffb472c9f795778fbc.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/
- https://static.usrfiles.com/ugd/286fb
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00007d87.bin9e7b18c2a1926d2340d52a5f8b7a53dda29c2d98f9a99b7d6400e5137c4fb5dd |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7D87 | 5188 bytes |
font_01_sfnt_off00008f46.bin28c5e137510daa0c3ad04902b3430cd7afd6c67cb6ae7435d568399d35ab8eba |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8F46 | 14548 bytes |
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