MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains embedded URLs that point to a known malicious redirector infrastructure, specifically 'ttraff.com'. The document body, though heavily obfuscated, contains references to this URL and other benign-looking PDF links, suggesting a link farm or SEO poisoning tactic. The ML classifier strongly flagged this PDF as malicious, indicating a high probability of malicious intent.
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.com/wix?keyword=introduction+to+thermal+and+fluid+engineering+pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/5bb01c_ea5a48c843174a1da4214b3bd662551a.pdf
- https://static.usrfiles.com/ugd/b8c837_34adb5eaa6b245c2b452b7330120860a.pdf
- https://static.usrfiles.com/ugd/82e28d_c93ba77ab97d49b8bab1b4d48c8ac892.pdf
- https://static.usrfiles.com/ugd/3e87bf_80a56916c6ac41129ebcbd6ff5ceb518.pdf
- https://cdn.shopify.com/s/files/1/0437/3826/7809/files/93870636605.pdf
- https://cdn.shopify.com/s/files/1/0431/9890/6528/files/lalifodimoviteriguz.pdf
- https://cdn.shopify.com/s/files/1/0431/1249/7312/files/13039551544.pdf
- https://cdn.shopify.com/s/files/1/0430/3742/5818/files/73039126625.pdf
- https://cdn.shopify.com/s/files/1/0430/4610/9341/files/9078655964.pdf
- https://cdn.shopify.com/s/files/1/0438/3935/7093/files/87129599622.pdf
- https://cdn.shopify.com/s/files/1/0433/7732/8278/files/stacked_bar_chart_python.pdf
- https://static.usrfiles.com/ugd/b8c837_f702f7ca07b3449f80b3d98b7fa04ab3.pdf
- https://static.usrfiles.com/ugd/b8c837_1120cf36c456447ea4535e950cd98174.pdf
- https://static.usrfiles.com/ugd/451461_4ad74216b3514808a2dc795b3976f5c2.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/
- http://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000065da.binaa784892ddfa34b8abcbd69a87eadb250fcb08fdb14e53a6979f8c114743baea |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x65DA | 5328 bytes |
font_01_sfnt_off000077ca.bin0fa550b510e30ccfc88b94ddd2d1202a891e2d8e27164f5c3575ad9887d82b4d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x77CA | 10068 bytes |
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