MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF document contains a large number of external links, many pointing to SEO-optimized PDF files on various domains. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass external link farm, and the ML classifier strongly flagged this PDF as malicious. The embedded URLs suggest a redirection or content delivery mechanism designed to exploit search engine optimization techniques to distribute malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9999
Heuristics 4
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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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External URI info PDF_URIPDF contains an external URL action
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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 http://stayusahotel-wb.devsite-1.com/uploads/1/3/0/4/130489131/130489131.html#tipos+de+palabras+por+su+morfologia PDF link annotation
- http://webdisk.valleybookstore.com/uploads/1/3/0/5/130589252/xodogefona-bimufe-wudokivag.pdfIn PDF document text
- http://sanctuaryhealing.net/uploads/1/3/1/3/131384656/jurarekakok_xojejepukov.pdfIn PDF document text
- http://granvillebates.com/uploads/1/3/1/0/131070089/javufokenite.pdfIn PDF document text
- http://stayusahotel-wb.devsite-1.com/uploads/1/3/0/4/130489131/terms.htmlIn PDF document text
- http://stayusahotel-wb.devsite-1.com/uploads/1/3/0/4/130489131/dmca.htmlIn PDF document text
- http://stayusahotel-wb.devsite-1.com/uploads/1/3/0/4/130489131/policy.htmlIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://furolizi.files.wordpress.com/2020/06/92098196159.pdfIn PDF document text
- https://nujivilij.files.wordpress.com/2020/06/24693675381.pdfIn PDF document text
- https://piwojuduxuf829276773.files.wordpress.com/2020/06/11461921017.pdfIn PDF document text
- https://kipevofi.files.wordpress.com/2020/05/mawiki.pdfIn PDF document text
- https://vemupuki.files.wordpress.com/2020/05/55254565432.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00005625.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5625 | 10756 bytes |
SHA-256: 9dd4ebbb3655895ded6f176ca44bfae4383f9e5abca74287a5ce79983dd05c6e |
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