MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was identified as malicious by a machine learning classifier and contains a critical heuristic firing for a malicious redirector link. The document body, though heavily obfuscated, contains the URL https://ttraff.ru/wix?keyword=master+cleanse+reddit, which is also listed as a malicious redirector. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources, likely intended to distribute further malicious content or lead users to phishing 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=master+cleanse+reddit
- https://static.usrfiles.com/ugd/bfbc46_f8b868a192d94aa4a36562d176a254c6.pdf
- https://static.usrfiles.com/ugd/f8de3e_6033b6fd7dbc4c4f8845023b03492cfc.pdf
- https://static.usrfiles.com/ugd/a2ebd8_1f223ac08254405ebd7593328e1a078d.pdf
- https://static.usrfiles.com/ugd/b8c837_9bc2e08d076f4eeaba5a49481af29a07.pdf
- https://static.usrfiles.com/ugd/b8c837_172d42e92ff247ad86fd322153d4e154.pdf
- https://static.usrfiles.com/ugd/b8c837_deb879493aa64324a0062f7b02f87ef8.pdf
- https://static.usrfiles.com/ugd/685707_3db1582d22284d89a6eb9d8216851cce.pdf
- https://static.usrfiles.com/ugd/b8c837_9ddd038498814c82b60a22be57d7bd59.pdf
- https://static.usrfiles.com/ugd/b8c837_15216b0e15844e7fbff76eea20b523a7.pdf
- https://cdn.shopify.com/s/files/1/0449/2935/1835/files/45413512226.pdf
- https://cdn.shopify.com/s/files/1/0430/6803/1143/files/lujowo.pdf
- https://cdn.shopify.com/s/files/1/0435/6918/4931/files/51647688713.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_off00005196.bin47daf5dd654d922bec6bd10f25006b8e0fe5a6537fb4cb1d09dbc9f4bcc3864f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5196 | 4940 bytes |
font_01_sfnt_off00006268.bin3cbd7c716909a50e3e322fbf75ee28fdac931eccb9c3fe7def382edd86808b35 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6268 | 10144 bytes |
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