MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains embedded links, one of which, 'https://ttraff.club/wix?keyword=euroqol+questionnaire+pdf', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting a lure to a malicious site. The presence of numerous links to external PDFs, many hosted on static.usrfiles.com, indicates a link farm strategy, likely to improve search engine ranking for the lure. The ML classifier strongly flagged this PDF as malicious.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 4
-
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.
-
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.
-
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.
-
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=euroqol+questionnaire+pdf
- https://static.usrfiles.com/ugd/d775a9_6f9b5084626747c69367fba93b298b39.pdf
- https://static.usrfiles.com/ugd/b8c837_20766bef1c0c4c12b0bc8654ff61b5e8.pdf
- https://static.usrfiles.com/ugd/b8c837_97c468cfd3ee45e4b0c3034c15c84f8b.pdf
- https://static.usrfiles.com/ugd/b8c837_156e57160c8e470397e946a5bd983a73.pdf
- https://static.usrfiles.com/ugd/b8c837_219904eb461341b78c0d4031c6bdbdb9.pdf
- https://static.usrfiles.com/ugd/b8c837_c4561c2183f94120b0ed500ba06b6d3c.pdf
- https://static.usrfiles.com/ugd/b8c837_3f434805ddda4e75bd6a79c4399aa167.pdf
- https://static.usrfiles.com/ugd/b8c837_a68c19e79ac14cc0a1bd0bc883cb7970.pdf
- https://static.usrfiles.com/ugd/b8c837_786df7fde3b647fda9709b813914d8c2.pdf
- https://static.usrfiles.com/ugd/b8c837_3de774401a19459cab34877a8135017a.pdf
- https://static.usrfiles.com/ugd/cb5dea_0f708cf9c636495cbdb5dad7a68ee6a4.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/ligumugazawebamupewav.pdf
- https://cdn.shopify.com/s/files/1/0438/4607/4525/files/principles_of_genetic_counselling.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_off000065ac.bin599eab23f1f7c5fd5301f0d09a9562c0bbfed33756dd8644609fe322e6405c67 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x65AC | 5120 bytes |
font_01_sfnt_off0000772c.binf6008a3e4e7f4c4cc5752b91ba141f4aea345765861d9fb613e09fc479e4ec67 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x772C | 16088 bytes |
Open this report in the interactive analyzer, or submit your own file for analysis.