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.ru/wix?keyword=libros+de+auditoria+financiera+pdf+gratis'. This URL is likely used to redirect users to malicious content. The document body, though heavily garbled, contains the same URL and appears to be a lure for free PDF downloads, a common social engineering tactic. The ML classifier also strongly indicated maliciousness.
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.ru/wix?keyword=libros+de+auditoria+financiera+pdf+gratis
- https://static.usrfiles.com/ugd/c70c35_425f82706304481aa7bc1ad900e0682a.pdf
- https://static.usrfiles.com/ugd/9d66c7_55d1e9ce9e9e457ba2cf0a0d228a5659.pdf
- https://static.usrfiles.com/ugd/e948c1_60b35efafd0e46309a94d7798f0b6b4d.pdf
- https://static.usrfiles.com/ugd/d7ba0f_cb5ccbca68df472489b322ab6a335f1f.pdf
- https://static.usrfiles.com/ugd/f6a907_5331b0f6ec17463ab85f960580702697.pdf
- https://static.usrfiles.com/ugd/97493d_fe8833fa4e77415fa2289485a495fe84.pdf
- https://static.usrfiles.com/ugd/b8c837_8b02eeaa05704768a4dc0be4137c9f2e.pdf
- https://cdn.shopify.com/s/files/1/0461/4268/5337/files/business_development_case_study.pdf
- https://cdn.shopify.com/s/files/1/0464/6977/5528/files/make_preschool_writing_worksheets.pdf
- https://static.usrfiles.com/ugd/b8c837_49ecb1d4859a4784a24d40ff33b95f8a.pdf
- https://static.usrfiles.com/ugd/c0fca2_c612897a3dbf41b6a5ee5f41ecea6ccc.pdf
- https://static.usrfiles.com/ugd/d5415a_9592f64f2ffd4c57aaf8a0e67ad80518.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_off0000629a.binad467e5c2347583cf71da8f6f0205ebe0e57a014270bb77f0079c4aefccb7d3e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x629A | 5256 bytes |
font_01_sfnt_off0000747c.bin9d74c2393bf9dba3bb5f193c4f6f381c96715da0c88c77c2f6584ce4478d896b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x747C | 11676 bytes |
font_02_sfnt_off000099d7.bincd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x99D7 | 4324 bytes |
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