MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a large number of embedded links, many of which point to a redirector infrastructure. The primary malicious URL identified is https://ttraff.ru/wix?keyword=microstrip+antenna+thesis+pdf, which is flagged as a known malicious redirector. The document body, though heavily obfuscated, contains references to this URL and other PDF links, suggesting a link farm or SEO poisoning tactic to drive traffic to malicious sites. The ML classifier also strongly indicated maliciousness.
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=microstrip+antenna+thesis+pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/ceb2e8_8ba4821fae80435d9ea88bc9fb2a28f0.pdf
- https://static.usrfiles.com/ugd/e3325f_3444332dc119481f8209185a62386002.pdf
- https://static.usrfiles.com/ugd/90423f_d6a4321e48d34bb19772a4e5856a0ee5.pdf
- https://static.usrfiles.com/ugd/b8c837_70a1ffe7f8bc4e2f9c2a1297548aa03e.pdf
- https://cdn.shopify.com/s/files/1/0431/5286/7494/files/jerarquia_de_los_angeles.pdf
- https://cdn.shopify.com/s/files/1/0432/0172/4577/files/dipefameko.pdf
- https://static.usrfiles.com/ugd/b8c837_4ecdb13adb7c4b1888c2f9531758d173.pdf
- https://static.usrfiles.com/ugd/70a38d_f957ae30558148c8abcafb2599bd4e79.pdf
- https://static.usrfiles.com/ugd/5e8de6_8e0728ba74694f9d963187daa5f6cbd8.pdf
- https://static.usrfiles.com/ugd/cc03df_050f1b369ab447548e1e3f911f579662.pdf
- https://cdn.shopify.com/s/files/1/0428/7594/5113/files/17054956190.pdf
- https://cdn.shopify.com/s/files/1/0428/8158/1209/files/appendix_b_form.pdf
- https://cdn.shopify.com/s/files/1/0428/5572/7260/files/33252011575.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_off0000643d.bine9ef3b2dd3d3f3433f50720a36c36fc5a89d50913feb28e69a28acfe868223ab |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x643D | 5216 bytes |
font_01_sfnt_off00007603.bin4ef0225cd617d0636a591d31bed22deb7b051cd5709db3ee34449b1f648298a2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7603 | 10056 bytes |
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