MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF was flagged as malicious by a machine learning classifier and contains a significant number of embedded links, indicating a link farm or redirection strategy. One critical heuristic identified a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL https://ttraff.cc/wix?keyword=java+vers%25C3%25A3o+1.+8+0+191, which is likely the primary malicious destination. The presence of numerous other links to static.usrfiles.com suggests a broader campaign to distribute malicious content.
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=java+vers%25C3%25A3o+1.+8+0+191
- https://static.usrfiles.com/ugd/4ae4db_f01b2e99c1984e6fabc13920f7be0364.pdf
- https://static.usrfiles.com/ugd/b8c837_f44beb747a9245f6bf874a2b572fcb98.pdf
- https://static.usrfiles.com/ugd/b8c837_59240b87a2df4a82886d87d09c4257d1.pdf
- https://static.usrfiles.com/ugd/b8c837_16e6a293a5504c0b86bfbed01fd690a4.pdf
- https://static.usrfiles.com/ugd/89064d_83ce151f85e34abeba706270a6057ff5.pdf
- https://static.usrfiles.com/ugd/b65acf_cb1f97c705374942b69dc6fdac496587.pdf
- https://static.usrfiles.com/ugd/a107db_3ed83a094dfd4193a9230ae54d3df408.pdf
- https://static.usrfiles.com/ugd/269bb8_366bb52c50cf4738b27c20a41848df3c.pdf
- https://static.usrfiles.com/ugd/1be480_4a97ee4f907241d8bd4d4b86778869bb.pdf
- https://static.usrfiles.com/ugd/b8c837_eb8056e2478d4a9590e3d1a63ee3de1e.pdf
- https://static.usrfiles.com/ugd/b8c837_db5137a3c7904d6e862e689d545f7115.pdf
- https://static.usrfiles.com/ugd/b8c837_1ce5c42005af4c70bb00e2326beefddc.pdf
- https://static.usrfiles.com/ugd/7dd30d_cd956d6624354b1bb2e20fc2c68b1c52.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.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000062e2.bincc9be510c2f45bd92c406e6a390ecb553c40e60b3f1dcf86bd6d4738b3212d28 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x62E2 | 5592 bytes |
font_01_sfnt_off00007567.bin56b94392ba8a9f7c49720c161b27d8ae5a4b4205fd5f4ac8cc2870d6886bc6e0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7567 | 15712 bytes |
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