MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.ru/wix?keyword=bank+po+solved+papers+by+kiran+prakashan+pdf`. This URL is likely used to redirect the user to a malicious site. The document body, though heavily obfuscated, also contains this URL and references to PDF papers, reinforcing the lure. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded links to external PDFs, many hosted on `static.usrfiles.com`.
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=bank+po+solved+papers+by+kiran+prakashan+pdf
- https://static.usrfiles.com/ugd/b8c837_bf71010f633e4f8f9dcf5413e4d7993d.pdf
- https://static.usrfiles.com/ugd/95089d_0c43981fed144ddf9b510135b2986766.pdf
- https://static.usrfiles.com/ugd/e8506d_7193ce96dd124d74b44637228cd267be.pdf
- https://static.usrfiles.com/ugd/df4650_21d4f788c4a44bd78d12a5ec55dcdefa.pdf
- https://static.usrfiles.com/ugd/b8c837_aecdab9270964012a74f003896c4ad80.pdf
- https://static.usrfiles.com/ugd/5ed537_3289937a642044d6a03405ad8523ebdc.pdf
- https://cdn.shopify.com/s/files/1/0439/1842/6267/files/que_es_una_solucion_hipotonica_isotonica_e_hipertonica.pdf
- https://cdn.shopify.com/s/files/1/0430/2848/0154/files/dewagipojobido.pdf
- https://cdn.shopify.com/s/files/1/0437/3633/4501/files/harvard_style_citation_annual_report.pdf
- https://static.usrfiles.com/ugd/b8c837_8ffb51f4d6df4c81883c0a56039f58f7.pdf
- https://static.usrfiles.com/ugd/b8c837_a0d5665c94c84289bad72b7396d0bf35.pdf
- https://static.usrfiles.com/ugd/8b2c09_8b8248b586a64573b67aacadaef55c0a.pdf
- https://static.usrfiles.com/ugd/45e30f_f1640ed4c3f04edebcda7c7dc2993b31.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_off00005d07.bin73287d90c451bee104969a3d56bd6312155b678ea192dc0a2471bef08970586d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5D07 | 5544 bytes |
font_01_sfnt_off00006fde.bin20f4390f7d977c37f9511933a6421c09d43696686994d8c2398d2d1151e1e9d7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6FDE | 15920 bytes |
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