MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector at 'https://ttraff.ru/wix?keyword=refracting+telescope+image+formation'. The document body, though heavily obfuscated, also contains this URL and other links to PDF files hosted on static.usrfiles.com, suggesting a link farm or SEO poisoning tactic. The ML classifier 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=refracting+telescope+image+formation
- https://static.usrfiles.com/ugd/3aca14_e4f2258fbe934f77a8a3e74a4cb821cb.pdf
- https://static.usrfiles.com/ugd/dc8a8e_a04206c87e964f0db31e766c991d7e2c.pdf
- https://static.usrfiles.com/ugd/b3bc21_3e71650bf9404ec3adb00ba38652529b.pdf
- https://static.usrfiles.com/ugd/429b25_c9200883ae2f4892b14d79fe811a0f2c.pdf
- https://static.usrfiles.com/ugd/b28561_4b534f5d10e5405e8dafba387e03ba80.pdf
- https://static.usrfiles.com/ugd/b8c837_bc102151c145408da4fd1d363b2187d9.pdf
- https://static.usrfiles.com/ugd/0cd3a8_81019b6da997456ca6a17dacc93d5250.pdf
- https://static.usrfiles.com/ugd/9b7d8a_1c59cf02fea34e95b0266b60c6cd3a09.pdf
- https://static.usrfiles.com/ugd/1df9ea_147e6193b65a42e0a0aa9bb23683dd7f.pdf
- https://cdn.shopify.com/s/files/1/0440/6899/5224/files/blood_culture_test_report.pdf
- https://cdn.shopify.com/s/files/1/0430/0292/1111/files/54958715090.pdf
- https://static.usrfiles.com/ugd/48d9a1_e570323b31ad4fa98e43f3f78a691869.pdf
- https://static.usrfiles.com/ugd/850f07_7ac67fd62da04b098c4b6338fb4096bb.pdf
- https://static.usrfiles.com/ugd/963627_983ac0444b3b463b9ddd7f569872dc90.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_off00008d6f.bin34f898ca108408c9dfef9916485b63e38bba7fa6b5f554c14fca897d84cee2a3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8D6F | 5340 bytes |
font_01_sfnt_off00009f95.bin83e39d344c1891326282354f1e368a55a4815ea19ef7067b17c3e5da4bdbc6da |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9F95 | 10156 bytes |
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