MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the heuristic PDF_MALICIOUS_REDIRECTOR_LINK. The primary malicious URL is https://ttraff.ru/pify?keyword=v%25C3%25ADrus+e+bact%25C3%25A9rias+resumo+pdf. The document body, though partially corrupted, suggests a lure related to 'Virus and bacteria' to encourage clicks. The ML classifier strongly supports the malicious verdict.
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/pify?keyword=v%25C3%25ADrus+e+bact%25C3%25A9rias+resumo+pdf
- http://files.academyatrattlesnakepoint.ca/uploads/1/3/0/7/130738943/6351380.pdf
- http://megotebek.questgolfacademy.co.uk/uploads/1/3/2/6/132682883/4761851.pdf
- http://files.bdooutlet.com/uploads/1/3/2/6/132695601/savotenejowikosukop.pdf
- https://cdn.shopify.com/s/files/1/0428/3439/5295/files/1670556240.pdf
- https://cdn.shopify.com/s/files/1/0438/4070/0578/files/78278259848.pdf
- https://cdn.shopify.com/s/files/1/0432/2285/9943/files/kanodowunitimalusaje.pdf
- https://cdn.shopify.com/s/files/1/0432/6175/5560/files/32192900095.pdf
- https://cdn.shopify.com/s/files/1/0428/6421/4182/files/bipeludedo.pdf
- https://cdn.shopify.com/s/files/1/0431/2930/7293/files/wukate.pdf
- https://cdn.shopify.com/s/files/1/0431/5208/1053/files/lefesaretefakipazeja.pdf
- https://cdn.shopify.com/s/files/1/0433/4950/8246/files/88946681892.pdf
- https://cdn.shopify.com/s/files/1/0428/8777/4367/files/zisufujuxabufes.pdf
- https://cdn.shopify.com/s/files/1/0432/8488/9758/files/4139813172.pdf
- https://cdn.shopify.com/s/files/1/0433/9387/6118/files/15059570726.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_off00007b1c.bin301b8a217e27485797cecbd61a495fcb0a3b47e71651375878dafe792a8ca0d5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7B1C | 5568 bytes |
font_01_sfnt_off00008db1.bine360e65dd4ecf5e5d83225d6763755c810cfc8a561f4351d93056bd45aa8a078 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8DB1 | 12424 bytes |
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