MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a link farm with 30 external PDF links, many pointing to static.usrfiles.com, and a primary link to a known malicious redirector at ttraff.club. This suggests a social engineering tactic to distribute further malicious content or phishing pages. 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.club/wix?keyword=concepto+de+auditoria+segun+autores+pdf
- https://static.usrfiles.com/ugd/6846fe_2c876cb2e08d45c292bd57f51f579874.pdf
- https://static.usrfiles.com/ugd/b8c837_f9657cdd0044408b8efc9cd9f90d1b28.pdf
- https://static.usrfiles.com/ugd/269bb8_31286efe7602445fb1f343beba260a0c.pdf
- https://static.usrfiles.com/ugd/5ecadc_c00c02bce2b549c6b0d2df8674309aef.pdf
- https://static.usrfiles.com/ugd/b8c837_d698581ab6b34881bb95e69b237368cf.pdf
- https://static.usrfiles.com/ugd/cdb50c_ec968080590842dbb15377096c482e0d.pdf
- https://static.usrfiles.com/ugd/405339_f5b97c3b636f45c5922b6c174d232863.pdf
- https://static.usrfiles.com/ugd/0aab01_260681a3bb694dcbbde04f4448740d58.pdf
- https://static.usrfiles.com/ugd/b8c837_07678323f78b4d569390d06684eff081.pdf
- https://static.usrfiles.com/ugd/b91566_62a4c5913ff64af481db74feb34d5e90.pdf
- https://static.usrfiles.com/ugd/b8c837_9917e18e7d0143e69e14cd82f8205fd7.pdf
- https://static.usrfiles.com/ugd/ef7b09_1850affe021c44a79354176949fd823c.pdf
- https://cdn.shopify.com/s/files/1/0431/9998/7873/files/jobifodigarukavosexutoj.pdf
- https://cdn.shopify.com/s/files/1/0429/9731/7783/files/18376110400.pdf
- https://cdn.shopify.com/s/files/1/0434/4024/2840/files/25208263448.pdf
- https://cdn.shopify.com/s/files/1/0431/5889/6802/files/nokojeworoxina.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_off0000a047.bin6bac60fb0feb4cd4b76bc898639948735819b74ee04156b60cd5ddd1003880d6 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA047 | 5196 bytes |
font_01_sfnt_off0000b201.bin90529b7fd1206beae17922d65bcdcbabf9b3bfeab94ecd377ac552b7dfcbccd7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB201 | 13896 bytes |
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