MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of external links, many of which point to other PDF files, suggesting a link farm for SEO poisoning. The document body, though heavily garbled, contains a title related to philosophy questions and an answer key, likely a lure. The ML classifier strongly indicated maliciousness, and the PDF_SEO_LINK_FARM heuristic fired, confirming the presence of numerous external 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://mingzhuyulechengxianjinbaijiale.br3h.com/uploads/1/3/0/4/130477170/130477170.html#quest%25C3%25B5es+de+filosofia+sobre+felicidade+com+gabarito
- http://yoglatt.com/uploads/1/3/0/5/130540026/4395902.pdf
- http://simplymom.ca/uploads/1/3/2/3/132303093/87420d44e9.pdf
- http://tristategpr.com/uploads/1/3/1/4/131437198/9139941.pdf
- http://mattdanielmusic.org/uploads/1/3/0/4/130436234/152207.pdf
- http://hostmaster.projectpath.co.uk/uploads/1/3/0/7/130776817/zekunune.pdf
- http://rehabilitacionneurorehabilitacion.com/uploads/1/3/0/5/130551904/414091.pdf
- http://camiodesigns.com/uploads/1/3/0/7/130776356/jufobevizepowimuvo.pdf
- http://farminthedell.net/uploads/1/3/1/8/131856161/jikupipo.pdf
- http://anahidecaniorealestate.com/uploads/1/3/1/3/131398093/pabizef_povabame_lataboge.pdf
- http://betterspacesllc.com/uploads/1/3/0/5/130542852/fezuxewa.pdf
- http://e.chicagobeerexperience.com/uploads/1/3/0/3/130379517/56a7ecb242c8.pdf
- http://ww.apfscil.org.uk/uploads/1/3/0/6/130604710/4126f3659.pdf
- http://sydney.awrc.org.au/uploads/1/3/0/6/130604355/7b593c1.pdf
- http://hostmaster.projectpath.co.uk/uploads/1/3/0/
- https://gazipanobiso.files.wordpress.com/2020/06/58129551834.pdf
- https://sovibabe.files.wordpress.com/2020/06/wutemitegokedemasefonoje.pdf
- https://relininomovu.files.wordpress.com/2020/06/xasitolapi.pdf
- https://nafufaborur.files.wordpress.com/2020/06/xosorup.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_off0000ef25.binf6b5e5dc981b05de3cef3f38c1e4df63fe85e881c99ff3b9ed2c846a18760267 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEF25 | 12832 bytes |
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