MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a link to a known malicious redirector, ttraff.ru, which is likely intended to lead the user to a phishing or malware distribution site. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'Pass simple evaluation'. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous external links, many pointing to static.usrfiles.com, suggests a link farm or redirection strategy. No scripts were extracted from this sample.
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=pass%25C3%25A9+simple+cm2+%25C3%25A9valuation
- https://static.usrfiles.com/ugd/b972d5_813cf22415ec4c1aa20a34b4c70082cc.pdf
- https://static.usrfiles.com/ugd/b8c837_bcf8ae4208574a229b816d0d778b054c.pdf
- https://static.usrfiles.com/ugd/9cb927_4d10459543524339acad177ecf32beb6.pdf
- https://static.usrfiles.com/ugd/b8c837_3b9e1d7a6d3f49a58d3d125e1dcf6009.pdf
- https://static.usrfiles.com/ugd/34e21e_1b60788725ec4be284ec0866f5bf9f18.pdf
- https://cdn.shopify.com/s/files/1/0431/3274/7927/files/soxopazeropuza.pdf
- https://cdn.shopify.com/s/files/1/0437/2283/4071/files/77735895574.pdf
- https://cdn.shopify.com/s/files/1/0430/4551/9513/files/juvinora.pdf
- https://cdn.shopify.com/s/files/1/0432/1044/0862/files/48259132580.pdf
- https://static.usrfiles.com/ugd/96bf9d_df31e8faa27e460c99bcf5e7726d073b.pdf
- https://static.usrfiles.com/ugd/39cb9d_615b79cd95554216a34f8fe01296b23c.pdf
- https://static.usrfiles.com/ugd/b8c837_c4b27a19a9c04f3e986963b242c21e9b.pdf
- https://static.usrfiles.com/ugd/405339_b46eaad8a52b4ef189f1c1d1341ea086.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/
- https://static.usrfiles.com/ugd/405339_b46eaad8
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00006f8c.bin60f71e525755159b0fb43e99dd04bd37a76084c4a2eb442e613412a6676819a8 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6F8C | 5316 bytes |
font_01_sfnt_off00008155.bin47e99e051eb33c775108c31477f04956174b356a303783a7cb3433b5ede16094 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8155 | 12180 bytes |
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