MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF document is identified as malicious due to its extensive use of embedded links. The primary link, 'https://ttraff.com/wix?keyword=solving+linear+inequalities+workshee', is flagged as a known malicious redirector. The document also contains a large number of other PDF links, many hosted on static.usrfiles.com, which is indicative of a link farm designed to obscure the ultimate destination or to distribute malware. The ML classifier strongly supports the malicious verdict.
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.com/wix?keyword=solving+linear+inequalities+workshee
- https://static.usrfiles.com/ugd/516793_086cce742d4844bebd14497ae433dcc8.pdf
- https://static.usrfiles.com/ugd/270e53_bfbd2d4ba66d4b6383248ab89b61d211.pdf
- https://static.usrfiles.com/ugd/70a38d_a37b445ffa194bd7acb6b2b00bc20e31.pdf
- https://static.usrfiles.com/ugd/a107db_43d24200be874a74b0b992323889d250.pdf
- https://static.usrfiles.com/ugd/defdb4_0544e5f234864dbe93d8ff7241bac87b.pdf
- https://static.usrfiles.com/ugd/34e21e_bb512c6737c34a7291a0d43eadaae27a.pdf
- https://cdn.shopify.com/s/files/1/0454/3496/2088/files/92605113424.pdf
- https://cdn.shopify.com/s/files/1/0464/8068/7272/files/elkay_water_cooler_spec_sheet.pdf
- https://static.usrfiles.com/ugd/b8c837_29722c605d6244a189447036c365eea1.pdf
- https://static.usrfiles.com/ugd/b8c837_591654e411f94a9eab90d94087a75b17.pdf
- https://static.usrfiles.com/ugd/b8c837_c3432394b27c49f6849e96a7c898cee8.pdf
- https://static.usrfiles.com/ugd/5360f8_52d26be5cf894af1b59fecd19eb8d6a8.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_off00005db4.bin474d030310d8496e471781f3aea78b5e1b399811f933a5e0e06659cc3ff1ae8a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5DB4 | 5392 bytes |
font_01_sfnt_off00007014.bin8eeb9699b194daf04d43d66aa7360ad60cf963f293d8f9d59f4a6232096c78b7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7014 | 9664 bytes |
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