MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a link to a known malicious redirector, ttraff.ru, disguised as a search result for 'Ncert solutions book pdf download'. The document also contains a large number of embedded links to various PDF files, likely part of a link farm to improve search engine ranking for malicious content. The ML classifier 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/wb?keyword=ncert%20solutions%20book%20pdf%20download
- http://files.orangehistory.org/uploads/1/3/1/3/131380998/6a7d3c8e67aa6.pdf
- http://files.ps242q.org/uploads/1/3/1/4/131410094/21a61592.pdf
- http://files.rioxpvista.com/uploads/1/3/1/6/131637034/36c763c9765.pdf
- http://files.jeffgerber.ca/uploads/1/3/0/8/130873849/5024718.pdf
- http://files.eosfp.com/uploads/1/3/1/3/131379663/1753975.pdf
- http://files.altcaresolution.com/uploads/1/3/0/7/130775619/rivipokakikuve.pdf
- http://files.petermrusso.org/uploads/1/3/1/4/131454692/nelosuzudewav.pdf
- http://files.swpahro.com/uploads/1/3/2/6/132681625/dupuxevum.pdf
- http://files.theflourishsisterhood.com/uploads/1/3/1/3/131398156/95d18288fa830.pdf
- https://zinetexis.files.wordpress.com/2020/07/bosebado.pdf
- https://xakovuwer.files.wordpress.com/2020/06/zununodonixofovevokotapep.pdf
- https://xajilaxaluv.files.wordpress.com/2020/06/memosasesugiwotubaxadosug.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/16485275060.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mekokagowofulagifofid.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nazowexoratusitufunu.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/90442425312.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_off00006621.binf902f3bbe52436c3c3feecd829236eb0ccd429f80246e2201672b36ffc6e0230 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6621 | 5296 bytes |
font_01_sfnt_off0000783a.bind2a33488ef861afcc1a4316b40fa93b03df3e2805522fa67a828217e32ceb3a8 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x783A | 10228 bytes |
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