MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was identified as malicious due to its inclusion of a link farm. The primary malicious URL, https://ttraff.ru/wix?keyword=aetctbo+rauf+faik, is a known redirector. The document body contains this URL along with numerous other links pointing to static.usrfiles.com, suggesting a tactic to artificially inflate search engine rankings or distribute traffic to malicious sites. The ML classifier also strongly indicated maliciousness.
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.ru/wix?keyword=aetctbo+rauf+faik
- https://static.usrfiles.com/ugd/b8c837_3f3fbc9f2fba4818ba50ef98047c3bf5.pdf
- https://static.usrfiles.com/ugd/b8c837_ba1f802286d44e0090a49df6032326b3.pdf
- https://static.usrfiles.com/ugd/b8c837_24ebcca7b62c436593b3d2f2ffde0024.pdf
- https://cdn.shopify.com/s/files/1/0428/4402/9084/files/37762039255.pdf
- https://static.usrfiles.com/ugd/b8c837_2bc9f02fb3f44690aa5f951b8747ba9e.pdf
- https://static.usrfiles.com/ugd/b8c837_83c5d557a7ab4480957e24a19e6cb8b7.pdf
- https://static.usrfiles.com/ugd/b8c837_42c352870c6d464aa2ba5c4fa26692ff.pdf
- https://static.usrfiles.com/ugd/b8c837_20bf0c9171154a18bdc394bd83543d88.pdf
- https://static.usrfiles.com/ugd/b8c837_d8ef1cf0359e4496adfba4afcf0b8cd9.pdf
- https://static.usrfiles.com/ugd/b8c837_342b465ca8d741a7bccbb3cb0d096842.pdf
- https://static.usrfiles.com/ugd/b8c837_de1f308bf5e34aafbe3b8548f13ecdf3.pdf
- https://static.usrfiles.com/ugd/b8c837_fa0bf9df090c4e56be2e4ff7179d123a.pdf
- https://static.usrfiles.com/ugd/b8c837_9ee4782d110e4c19bf7a7e7c01607845.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_off00004270.bin7322ac379e7b084be8306fe42996600d541edb90c52aaef427f7742eca4e3835 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4270 | 4860 bytes |
font_01_sfnt_off00005308.bin2e3c680cdd77276c0c83c726e639a9dc058737d00b647601e254e248f536d025 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5308 | 9708 bytes |
font_02_sfnt_off0000746e.bin7cfe47161d089c9a1cd36668df84ea9e273a8784f22ed9ab483df21e72234560 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x746E | 16932 bytes |
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