Malware Insights
The PDF file exhibits characteristics of a link farm, containing numerous external URLs pointing to other PDF files hosted on various domains. The ML classifier strongly indicated maliciousness, and the PDF_SEO_LINK_FARM heuristic confirms the presence of a mass external link farm. The document body, though partially corrupted, contains the title 'Problemas de matematicas para 5 grado en ingles' and embedded URLs, suggesting a lure to disguise the malicious nature of the document. The primary attack pattern appears to be distributing or linking to malicious content via a large number of seemingly unrelated domains.
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://craniosacralnashville.com/uploads/1/3/0/2/130288830/130288830.html#problemas+de+matematicas+para+5+grado+en+ingles
- http://madrigalistiturritani.it/uploads/1/3/0/3/130379222/sejuk-zolaritokuwej-desamuwod.pdf
- http://naturalbalancetherapies.org/uploads/1/3/0/8/130813913/suxupovasarud.pdf
- http://newlifeintlmin.org/uploads/1/3/0/4/130483983/viwejaw_kevobipumuwif.pdf
- http://curvaceousgoddessfashions.com/uploads/1/3/0/6/130604749/xifepid_vilotibu_tipole_kegowudikavevom.pdf
- http://webdisk.pokrconsulting.com/uploads/1/3/0/7/130776498/navawowopevuwisuru.pdf
- http://hostmaster.lambethnqt.co.uk/uploads/1/3/0/6/130639641/wowosege_kokuwedaravavud.pdf
- http://porschasdivinediamonds.com/uploads/1/3/0/7/130776300/mifujewuxex.pdf
- http://www.charlesriverrowingcamps.com/uploads/1/3/0/6/130604279/gowuwa.pdf
- http://rollingdoorsny.org/uploads/1/3/0/4/130483238/9d29031c188fa.pdf
- http://freethought.com/uploads/1/3/0/2/130288006/f241577c.pdf
- http://tambakula.org/uploads/1/3/0/5/130538939/469870.pdf
- http://bjucgo.org/uploads/1/3/0/5/130543868/9294942.pdf
- http://brettwestfall.com/uploads/1/3/0/5/130541137/e742cc.pdf
- http://sensaloveworker.com/uploads/1/3/0/9/130969172/662683.pdf
- http://jevasconpower.com/uploads/1/3/0/5/130588594/ketemi-xoboj.pdf
- http://brandonotes.net/uploads/1/3/0/7/130775293/zazibezuforaf-rubesopakal-fatiratarajo.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 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00006c95.bin63ea0d3212a0f2fd78d246d643c2d79dcf9e55a1e536e84cd75cffebcc76f827 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6C95 | 9032 bytes |
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