MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
T1204.002 Malicious Link
The PDF contains a large number of external links, many of which point to domains that appear to be part of a link farm designed for SEO manipulation. The document body, though heavily obfuscated, contains text related to pharmaceutical companies and the wkhtmltopdf application, suggesting a lure. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous unknown URLs reinforces this assessment. The primary attack pattern involves redirecting users to malicious content via these links.
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://webdisk.jhigh18.com/uploads/1/3/0/5/130543240/130543240.html#compa%25C3%25B1%25C3%25ADas+farmac%25C3%25A9uticas+en+clayton+n PDF link annotation
- http://fileandfile.org/uploads/1/3/1/1/131163833/zimifu.pdfIn PDF document text
- http://venustiffanys.net/uploads/1/3/1/1/131164173/5643268.pdfIn PDF document text
- http://dongtaiyulechengkaiye.br3h.com/uploads/1/3/1/6/131637242/tideginakizurezibere.pdfIn PDF document text
- http://nofone.net/uploads/1/3/1/6/131606331/6759693.pdfIn PDF document text
- http://rattingonrodents.com/uploads/1/3/0/5/130546434/deguvofe.pdfIn PDF document text
- http://wibmexpo.com/uploads/1/3/0/7/130739235/5684566.pdfIn PDF document text
- http://bigpond.shop/uploads/1/3/0/8/130815093/378010.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://bijufexabez.files.wordpress.com/2020/06/18483200525.pdfIn PDF document text
- https://gokidomaj.files.wordpress.com/2020/06/81269186602.pdfIn PDF document text
- https://xelilen.files.wordpress.com/2020/06/vuginuje.pdfIn PDF document text
- https://jidinetobix.files.wordpress.com/2020/06/36837035120.pdfIn PDF document text
- https://fozebide.files.wordpress.com/2020/06/27619602724.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_off0000cbf2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCBF2 | 12336 bytes |
SHA-256: 0dce1bc83f03488620630430cb050bc22bdb8858df2237ad59768e264577d84e |
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