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, pointing to 'https://ttraff.me/wix?keyword=meningoencephalitis+pdf+2014'. This URL is likely used to redirect users to a malicious site. The document also contains a large number of external PDF links, many hosted on 'static.usrfiles.com', suggesting a link farm or SEO poisoning attempt to improve search engine ranking for malicious content. 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.me/wix?keyword=meningoencephalitis+pdf+2014
- https://static.usrfiles.com/ugd/b8c837_2b1bded44bc649df9930a58778dcf501.pdf
- https://static.usrfiles.com/ugd/4479ed_5b90ff97b59c4fd796ac987a4369bd2e.pdf
- https://static.usrfiles.com/ugd/d216cb_84d3b1dd5c2b4e31b6b59eb21c02fa0e.pdf
- https://static.usrfiles.com/ugd/b4609a_18bafe208fd74349ac390494ac5cc4b4.pdf
- https://static.usrfiles.com/ugd/0d2908_10801a1b47d84c0cb4a4063f4df3d270.pdf
- https://static.usrfiles.com/ugd/a76634_ea596c3c5e7a46728c8997993116c501.pdf
- https://static.usrfiles.com/ugd/b8c837_eeb5fbc71b5f41eba42156967372d0cf.pdf
- https://cdn.shopify.com/s/files/1/0439/4654/1211/files/82215379494.pdf
- https://cdn.shopify.com/s/files/1/0432/7833/6166/files/high_dimensional_data_analysis.pdf
- https://cdn.shopify.com/s/files/1/0459/8978/9853/files/spatial_data_definition.pdf
- https://cdn.shopify.com/s/files/1/0430/3123/2666/files/new_zealand_vs_peru_score.pdf
- https://cdn.shopify.com/s/files/1/0439/9041/7566/files/60906419832.pdf
- https://cdn.shopify.com/s/files/1/0434/4761/5649/files/motagavoras.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_off00008a43.bin3f6f213b25792cc5d42b2e8f3fcff9d8fc14e282c223eac8a9a32a628342d8a3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8A43 | 5740 bytes |
font_01_sfnt_off00009dee.bina0bc37f3f62bc6d1dbdcb7a119fcbeb8dd6f120c3ddb6b740bbbe633539f572a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9DEE | 14392 bytes |
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