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, specifically pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains the same URL and a reference to sheet music, suggesting a lure. The presence of a large number of embedded URLs, many pointing to Shopify and static hosting, indicates a link farm strategy, likely to obscure the final malicious destination. The ML classifier also 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.ru/wix?keyword=oceans+hillsong+united+sheet+music+p
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fuwakuda.pdf
- https://cdn.shopify.com/s/files/1/0433/0032/3478/files/xovidadirarote.pdf
- https://cdn.shopify.com/s/files/1/0447/3477/5445/files/conceito_de_reviso_bibliogrfica.pdf
- https://cdn.shopify.com/s/files/1/0433/4927/8875/files/geographical_information_systems_and_science_3rd_edition.pdf
- https://static.usrfiles.com/ugd/c3f59f_6f50b784093442eeb828e4c2045b4c23.pdf
- https://static.usrfiles.com/ugd/b8c837_1f15bf8ca81d47c7aa6493ce4159c306.pdf
- https://static.usrfiles.com/ugd/227d0f_8b37a83fa3fa4bb9bf73979f3194ca93.pdf
- https://static.usrfiles.com/ugd/b48b60_222935d6ae024828812f39045b969fb1.pdf
- https://static.usrfiles.com/ugd/b8c837_e7a8f57579a54e8bb5522ce5f8d24548.pdf
- https://static.usrfiles.com/ugd/b8c837_d098e4fd11204f8c9526e8a3bd5f751b.pdf
- https://static.usrfiles.com/ugd/ab922d_8b250b9df80e48e290d4f6f91ceade74.pdf
- https://static.usrfiles.com/ugd/b8c837_25a6bb1d7c204d19aa612d7f8767dc19.pdf
- https://static.usrfiles.com/ugd/1ee69b_1711e43f113b4f0abfbe445a41942f47.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_off00005202.bine216bcf73c4cbbfc37118be99944c9acb78fd57f661470eec7c02018134b1112 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5202 | 5416 bytes |
font_01_sfnt_off00006441.binf0771690c6c00dd4dd50f75cdc14b9d4cb0cf330a1c9f7e28b102fedda753dfe |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6441 | 9968 bytes |
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