MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF document contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=somewhere+over+the+rainbow+instrumen'. Additionally, it features a PDF link farm with numerous external links, many hosted on static.usrfiles.com. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the presence of these links suggests a phishing or malware distribution attempt.
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=somewhere+over+the+rainbow+instrumen
- https://static.usrfiles.com/ugd/dad90e_850fb4469a8f44daa79d592cab0df33d.pdf
- https://static.usrfiles.com/ugd/e3ff21_ad7de169f23242a9b35dec11ef36fa70.pdf
- https://static.usrfiles.com/ugd/cf79db_da293b5cc0a441f7af7795855f2812d0.pdf
- https://cdn.shopify.com/s/files/1/0435/2435/8308/files/16261181620.pdf
- https://cdn.shopify.com/s/files/1/0459/6288/7335/files/guzusoguxukevuduboji.pdf
- https://cdn.shopify.com/s/files/1/0434/1396/2919/files/30344018285.pdf
- https://static.usrfiles.com/ugd/02beb7_bafc092ac3eb498d8bd11e89d0bbc386.pdf
- https://static.usrfiles.com/ugd/f80014_cad7f9167359461484e77d4185185d9a.pdf
- https://static.usrfiles.com/ugd/b8c837_58c7cd9e7fb84697a096215b1eac9c71.pdf
- https://static.usrfiles.com/ugd/b8c837_d81b9089030945d886ddd7c35c0b34d2.pdf
- https://static.usrfiles.com/ugd/b8c837_76f1e2bbcfa240e8ba01273a0e1bb731.pdf
- https://cdn.shopify.com/s/files/1/0435/2730/7423/files/tawosuboko.pdf
- https://cdn.shopify.com/s/files/1/0432/1024/4260/files/slow_hollows_atelophobia.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_off00005387.bina80ece7223ef02eb835ae5467000a6f1af28caf4dee7f6e59fb0c89f3ddb0b05 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5387 | 5288 bytes |
font_01_sfnt_off0000656e.bin26b1a62a650d42bfb3355bc643451e6d398880ddc1c2e9114aefc0272c39f56d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x656E | 10124 bytes |
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