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.com/wix?keyword=protective+relaying+theory+and+applications'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many of which point to 'static.usrfiles.com'. The document body, though heavily obfuscated, contains references to the redirector URL and other PDF links, suggesting a lure to external malicious content. 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.com/wix?keyword=protective+relaying+theory+and+applications
- https://static.usrfiles.com/ugd/b8c837_5c7005fbcfba4d9e8714414bc9b18814.pdf
- https://static.usrfiles.com/ugd/b8c837_5156146dd94d42c391dd8b185ecb2520.pdf
- https://static.usrfiles.com/ugd/b8c837_dbc86303433246dcb82dd1b2eb167b25.pdf
- https://cdn.shopify.com/s/files/1/0431/6925/1492/files/76877669723.pdf
- https://cdn.shopify.com/s/files/1/0434/6799/7344/files/lubupuzesaravafebi.pdf
- https://cdn.shopify.com/s/files/1/0428/3406/7615/files/ziturada.pdf
- https://static.usrfiles.com/ugd/b8c837_fd460feb7a0f495996b98d76e4f7217d.pdf
- https://static.usrfiles.com/ugd/b8c837_9e1e337cd6fd4260911a757f1980cbd0.pdf
- https://static.usrfiles.com/ugd/b8c837_fae17ae0c622442c8a7a99995f1026ea.pdf
- https://static.usrfiles.com/ugd/b8c837_6eb6c193ad904bc6abfbbe9ed62d48d8.pdf
- https://static.usrfiles.com/ugd/b8c837_fbf8b95577a94c27a8bfaee0610ac755.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_off00004b38.bin5c53fc1c6663005b7f35ed1f852847766bc38256bfd728f768ec1fd481058cbd |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4B38 | 5496 bytes |
font_01_sfnt_off00005ddb.bin27f12ec77ed5e25c318e9cb105f36c677b6dc277ba152a135b1fb6bea21e7115 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5DDB | 9388 bytes |
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