MALICIOUS
120
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1200 Hardware Add-Override
T1059.001 PowerShell
The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=clinical+practice+guidelines+sudden+hearing+loss'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on 'static.usrfiles.com'. The document body, though heavily obfuscated, contains references to these URLs, suggesting an attempt to disguise malicious links within seemingly legitimate content. The primary attack pattern involves luring users to a malicious site via these links.
Heuristics 3
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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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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=clinical+practice+guidelines+sudden+hearing+loss
- https://static.usrfiles.com/ugd/77d535_7851941f4111442f94d3e490716b2e66.pdf
- https://static.usrfiles.com/ugd/ca300b_763d19419e0c4de8b2899d17445f2b99.pdf
- https://static.usrfiles.com/ugd/b8c837_cbb400a36ca84a078d6a91bcc7b9d5d6.pdf
- https://static.usrfiles.com/ugd/735189_e5bc31a4f3274f7b9fcb4733af2108d9.pdf
- https://static.usrfiles.com/ugd/7e0eb0_d956e1ef3a6644929b5e37dc393c2a55.pdf
- https://static.usrfiles.com/ugd/1df9ea_1ccf6a4fadfb48c0aed06227ef53783d.pdf
- https://static.usrfiles.com/ugd/07e02c_c39046fe8a06461f8fd053f4acc4c539.pdf
- https://static.usrfiles.com/ugd/07ef24_802b8b228b9a467a8e96db494a402962.pdf
- https://static.usrfiles.com/ugd/d5d855_c62f968267b543b8bdda77c8138da8d7.pdf
- https://static.usrfiles.com/ugd/2f8cea_489ec9fdd971428683ca13850db45853.pdf
- https://static.usrfiles.com/ugd/10e3af_cccb10332dae491ba72977809dd25718.pdf
- https://static.usrfiles.com/ugd/eed56f_05e4132b5c6f4146a2f2761f79d39423.pdf
- https://static.usrfiles.com/ugd/b4609a_c19a243f747a4ac2a1569cf887e99984.pdf
- https://static.usrfiles.com/ugd/defcb2_dc262d6bef694fd997c7a75202bd6f32.pdf
- https://static.usrfiles.com/ugd/b8c837_ef542ec166994c67846a15a9a62696dc.pdf
- https://static.usrfiles.com/ugd/cc03df_3855220fd0ae4902bb903c9267ec912d.pdf
- https://static.usrfiles.com/ugd/b8c837_7ba1d084c5234a77990e9413f8821f85.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000071d6.bin7109eb4005f5074964231c0a69fa74eafd0ed8fb6291fe646a86bfeffd3a4f76 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x71D6 | 5240 bytes |
font_01_sfnt_off00008394.binc650884ee2610c2cf0a6d28169cf9ad9a114c67a85b7aa65e2343493bda76536 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8394 | 10084 bytes |
font_02_sfnt_off0000a606.bin7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA606 | 4324 bytes |
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