MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF document contains a large number of embedded external links, identified by the 'PDF_SEO_LINK_FARM' heuristic. The ML classifier also strongly indicated maliciousness. The document body contains text that appears to be a lure, referencing 'Cuestionario ensanut 2012 pdf', and includes URLs that are likely part of a link farm designed to redirect users to malicious content. No scripts were extracted, but the sheer volume of external links suggests an attempt to distribute malware or lead users to phishing sites.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
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://hbcphx.org/uploads/1/3/0/7/130740212/130740212.html#cuestionario+ensanut+2012+pdf PDF link annotation
- http://annaoneal.com/uploads/1/3/0/7/130739291/fodeludu_tujakorituja_pekifirusiv_jirikogom.pdfIn PDF document text
- http://statmedicaltranscribing.com/uploads/1/3/0/3/130324288/xipazewunerigozigi.pdfIn PDF document text
- http://gospelsupply.org/uploads/1/3/0/4/130488067/521102.pdfIn PDF document text
- http://turismotard.com/uploads/1/3/0/4/130489536/kalaligegugire-woxesapogan-junepikaboxuv-tusogadife.pdfIn PDF document text
- http://futsal-regensburg.de/uploads/1/3/0/5/130551202/4464942.pdfIn PDF document text
- http://strootmanfotografie.nl/uploads/1/3/0/5/130588658/xowuvo.pdfIn PDF document text
- http://kinelyon6.com/uploads/1/3/0/5/130540397/fewugazox.pdfIn PDF document text
- http://odilefazioni.com/uploads/1/3/0/3/130313054/zamijuxil-gomuto-jopeji-zapeju.pdfIn PDF document text
- http://lynsiesgallery.com/uploads/1/3/0/4/130435712/suzimudinafademofoz.pdfIn PDF document text
- http://www.plantpathsensing.com/uploads/1/3/0/8/130813108/1988652.pdfIn PDF document text
- http://fontawesome.iohttp://fontawesome.io/license/In 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
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00005f85.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5F85 | 1888 bytes |
SHA-256: eb8cf970f7fbc00a6c6a3e60a1f2416a280371eb4fe4c509803b0d51b5f2ff70 |
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font_01_sfnt_off00006827.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6827 | 8812 bytes |
SHA-256: d1713991c50bec520c396ee2dedeae3bb4a92f032834715d2e454be2bb280257 |
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