MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically the URL https://ttraff.ru/wix?keyword=harbrace+college+handbook+pdf. Additionally, it exhibits characteristics of a PDF link farm, containing numerous external links. The ML classifier strongly supports the malicious nature of this PDF, indicating it's designed to redirect users to harmful content.
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=harbrace+college+handbook+pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://www.daltonmaag.com/
- https://static.usrfiles.com/ugd/b8c837_d4fed21158834cdfa3540cd63c02d22a.pdf
- https://static.usrfiles.com/ugd/b8c837_356b15b450b24591b0eb03bcefb11b74.pdf
- https://static.usrfiles.com/ugd/b8c837_1a00ba5b3d8f418fb953f151f2509a5a.pdf
- https://cdn.shopify.com/s/files/1/0428/1945/3095/files/21807334732.pdf
- https://cdn.shopify.com/s/files/1/0439/4234/6907/files/2171936480.pdf
- https://static.usrfiles.com/ugd/b8c837_897adf9c4edd4691803fa37a7a654b2c.pdf
- https://static.usrfiles.com/ugd/b8c837_88574f32a474429e86cb0524108e9c2d.pdf
- https://static.usrfiles.com/ugd/b8c837_59741ccce1674485acd68ab77f7d4372.pdf
- https://static.usrfiles.com/ugd/b8c837_9fd49c83dee04e82a9ad8695ef5cdc45.pdf
- https://static.usrfiles.com/ugd/b8c837_def89ea1257645e09c74abcd83d51160.pdf
- https://static.usrfiles.com/ugd/b8c837_dbdd8039c4d94a20a1dacf8571ad8fef.pdf
- https://static.usrfiles.com/ugd/b8c837_4a7c8bbcd9bd4834aa70780b5158fb8d.pdf
- https://static.usrfiles.com/ugd/b8c837_5eec4bbe028b4a24be489570cf5eb964.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00004e5f.bincaa8ab96c3ea5dff1ae1aa36c2bcad8c646dbe85fcf8afa2334dea23a00ed4c1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4E5F | 5064 bytes |
font_01_sfnt_off00005f73.bin4094abb5bff6ee42ca70d3ee86a335f2da9390bbedebbefec2afcdeece46819f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5F73 | 10076 bytes |
font_02_sfnt_off00008209.bincd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8209 | 4324 bytes |
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