MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a large number of embedded links, many of which point to a link farm designed to redirect users to potentially malicious content. One such redirector URL is https://ttraff.ru/wix?keyword=basic+conversation+in+english+for+be. The ML classifier strongly indicated maliciousness, and the presence of a link farm suggests an attempt to distribute malware or phish for credentials.
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=basic+conversation+in+english+for+be
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/b8c837_1008a45593a0482ba727a4884fcec52b.pdf
- https://static.usrfiles.com/ugd/b8c837_46dc87ecc9b048e3a764ab1bcb320ec0.pdf
- https://static.usrfiles.com/ugd/b8c837_ae2353dbd8ff440390744f326616ca06.pdf
- https://static.usrfiles.com/ugd/b8c837_0ed75cfebe6046b6a65ea0b82b94befb.pdf
- https://static.usrfiles.com/ugd/4826f5_58418dddaefb41df8faac92ff5d4ef2f.pdf
- https://static.usrfiles.com/ugd/d94ae5_64d0d53afb50400fb5f4bef1042aa233.pdf
- https://static.usrfiles.com/ugd/b8c837_86b54a4779884ccc938a13b2a93799e8.pdf
- https://static.usrfiles.com/ugd/b8c837_02acddd7e40b498da8af23f36e4353ed.pdf
- https://static.usrfiles.com/ugd/b8c837_7331cb75466f4d14ab4eec207a33c1d8.pdf
- https://static.usrfiles.com/ugd/b8c837_0855aecdad9f4b0aa0a1147d93c609aa.pdf
- https://static.usrfiles.com/ugd/b8c837_9947050d62384407bd39a6aeef7e5bc2.pdf
- https://static.usrfiles.com/ugd/b8c837_39e6caa1872b43a28dbce8683b806f40.pdf
- https://static.usrfiles.com/ugd/ab922d_3945f1ff22ff409eadc19e0ca792cc99.pdf
- https://static.usrfiles.com/ugd/b8c837_0e26aba2fe3248e48108a57d43fa3a8c.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/
- http://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00009a11.bin9a4ae9b7c91358aeb0863e8ad541c72e41985d458ce426204bfc192d8ce96fc0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9A11 | 5392 bytes |
font_01_sfnt_off0000ac64.binad6334a789648299c5d0c99e19fb6f5378efe95127448e9b1b9e9ee63916515f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAC64 | 10692 bytes |
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