MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains embedded links that point to a known malicious redirector infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the URL 'https://ttraff.club/wix?keyword=the+deepest+well+pdf', suggesting a lure to a malicious site. The PDF also exhibits characteristics of a link farm, with numerous external PDF links, many of which are hosted on static.usrfiles.com. The ML classifier 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.club/wix?keyword=the+deepest+well+pdf
- http://files.seaweedmoon.com/uploads/1/3/0/8/130874394/f5759615de4d.pdf
- http://taxixodep.lauranevitt.com/uploads/1/3/1/6/131636727/1830175.pdf
- https://static.usrfiles.com/ugd/72b0e7_280ed699e1ca440396e3b5d7d80cc933.pdf
- https://static.usrfiles.com/ugd/963627_0caddce8a706408db3c1d4c785c44550.pdf
- https://static.usrfiles.com/ugd/b8c837_a538c46f3e7540e2b482ad1377d0217a.pdf
- https://static.usrfiles.com/ugd/b8c837_04d1f3a3380e4712b1ef075d87b1ab9a.pdf
- https://static.usrfiles.com/ugd/7ea8bb_2d85dc0ef2464b38ac50ece1a3d5d0fe.pdf
- https://static.usrfiles.com/ugd/7d21c0_1a591053e4994dcfa74d8e8039869c15.pdf
- https://cdn.shopify.com/s/files/1/0463/6829/3019/files/guia_consejo_tecnico_cuarta_sesion_2019.pdf
- https://cdn.shopify.com/s/files/1/0429/7405/2503/files/barrios_julia_florida_tab.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.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000045bc.bin00d3e94fa82864de99658bf06494833b0984d5509852e8338da19ca4cfabd021 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x45BC | 4388 bytes |
font_01_sfnt_off000054c8.binefaa76bdfca65320c7f90f4f3749245ddac4fedfbda0902329bb42c53ee60f61 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x54C8 | 9864 bytes |
font_02_sfnt_off00007675.bind1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7675 | 4324 bytes |
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