MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of embedded links, many of which point to a link farm hosted on static.usrfiles.com. One of the embedded URLs, https://ttraff.ru/wix?keyword=planos+electricos+industriales, is flagged as a known malicious redirector. The ML classifier also strongly indicated maliciousness. The primary attack pattern appears to be a link farm used for redirection to malicious sites.
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=planos+electricos+industriales
- https://static.usrfiles.com/ugd/c3548c_176f97a56f494cac8b7350e0e4607d65.pdf
- https://static.usrfiles.com/ugd/b8c837_1c9c9cb729df4c818de01045768e1714.pdf
- https://static.usrfiles.com/ugd/b8c837_b8c3f96b8e13470b834a4425a36cae95.pdf
- https://static.usrfiles.com/ugd/b8c837_715346d638d14508a09eaaf21faff564.pdf
- https://static.usrfiles.com/ugd/b8c837_16d878a99e694a5d98a201f02f8bfb7a.pdf
- https://static.usrfiles.com/ugd/2e4eb4_88797cf468c64f2ba4710e6c66098c91.pdf
- https://static.usrfiles.com/ugd/822ecd_909233fe158e49448363004446a5c562.pdf
- https://cdn.shopify.com/s/files/1/0430/5590/6973/files/86442169705.pdf
- https://cdn.shopify.com/s/files/1/0433/8830/5558/files/979289708.pdf
- https://cdn.shopify.com/s/files/1/0462/9771/0752/files/kotemajajewivejun.pdf
- https://cdn.shopify.com/s/files/1/0431/4588/7905/files/goxitatudiputodol.pdf
- https://cdn.shopify.com/s/files/1/0437/6713/6413/files/orientalis_dan_diabolisme_pemikiran.pdf
- https://static.usrfiles.com/ugd/b8c837_846b09febf96493084f20af08920a2be.pdf
- https://static.usrfiles.com/ugd/b8c837_12a5db0c05e74c60a1d817b2e335eadf.pdf
- https://static.usrfiles.com/ugd/b8c837_8800f48600f345069d2bbca9e13aedf9.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_off000069ca.bin6736bee2687b0baceb4c9ff4c2cf809a7a580f40cc600c7c5623794484612329 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x69CA | 4936 bytes |
font_01_sfnt_off00007a90.bin867c909a96815c23ee117e45c2ccb1a3f3df94eb2f061bae20b6a058c68e0cac |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7A90 | 10960 bytes |
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